Add solves for 6,7 & 8
This commit is contained in:
Tabledevil
465
6/6c.ipynb
Normal file
465
6/6c.ipynb
Normal file
@@ -0,0 +1,465 @@
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{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 14,
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"metadata": {},
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"outputs": [],
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"source": [
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"with open('testinput', 'r') as file:\n",
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" content = file.readlines()\n",
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"\n",
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"map = [list(line.strip()) for line in content]\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 15,
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"metadata": {},
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"outputs": [],
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"source": [
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"def get_start_position(map):\n",
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" for i, row in enumerate(map):\n",
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" for dir in ['^', '<', '>', 'V']:\n",
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" if dir in row:\n",
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" return (i, row.index(dir), dir)\n",
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" return -1,-1,None\n",
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"\n",
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"\n",
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"start_x,start_y,start_dir = get_start_position(map)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 16,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Position: (6, 4) facing ^, sofar visited 0 cells.\n",
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"....#.....\n",
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".........#\n",
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"..........\n",
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"..#.......\n",
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".......#..\n",
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"..........\n",
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".#..^.....\n",
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"........#.\n",
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"#.........\n",
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"......#...\n"
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]
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}
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],
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"source": [
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"def count_visited(map):\n",
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" return sum(row.count('X') for row in map)\n",
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"\n",
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"def printmap(map):\n",
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" x, y, dir = get_start_position(map)\n",
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" if dir:\n",
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" print(f\"Position: ({x}, {y}) facing {dir}, sofar visited {count_visited(map)} cells.\")\n",
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" else:\n",
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" print(f\"No guard found! Visited {count_visited(map)} cells.\")\n",
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" for row in map:\n",
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" print(''.join(row))\n",
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"\n",
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"\n",
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"printmap(map)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 17,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"(5, 4)"
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]
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},
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"execution_count": 17,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"def calculate_next_position(x, y, dir):\n",
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" if dir == '^':\n",
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" return (x - 1, y)\n",
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" elif dir == '<':\n",
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" return (x, y - 1)\n",
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" elif dir == '>':\n",
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" return (x, y + 1)\n",
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" elif dir == 'V':\n",
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" return (x + 1, y)\n",
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"\n",
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"def in_bounds(map, x, y):\n",
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" return 0 <= x < len(map) and 0 <= y < len(map[0])\n",
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"\n",
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"calculate_next_position(6, 4, '^')"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 18,
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"metadata": {},
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"outputs": [],
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"source": [
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"def move(map,pos=None):\n",
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" # Get the current position of the robot\n",
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" if pos is None:\n",
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" x, y, dir = get_start_position(map)\n",
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" elif len(pos)==3:\n",
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" x,y, dir = pos\n",
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" else:\n",
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" raise ValueError()\n",
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" \n",
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" if in_bounds(map,x,y):\n",
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" map[x][y] = 'X'\n",
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"\n",
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" if dir:\n",
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" # Determine the next position based on the current direction\n",
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" new_x, new_y = calculate_next_position(x, y, dir)\n",
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" # while new position is obstacle turn right and recalculate the next position\n",
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" while in_bounds(map,new_x,new_y) and map[new_x][new_y] == '#':\n",
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" if dir == '^':\n",
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" dir = '>'\n",
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" elif dir == '<':\n",
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" dir = '^'\n",
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" elif dir == '>':\n",
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" dir = 'V'\n",
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" elif dir == 'V':\n",
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" dir = '<'\n",
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" new_x, new_y = calculate_next_position(x, y, dir)\n",
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" # Update the map with the robot's new position and direction\n",
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" if in_bounds(map,new_x,new_y):\n",
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" map[new_x][new_y] = dir\n",
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" return True, (new_x,new_y,dir)\n",
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" \n",
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" else:\n",
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" print(f\"No guard found! Visited {count_visited(map)} cells.\")\n",
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" return False, (-1,-1,dir)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 19,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Position: (5, 4) facing ^, sofar visited 1 cells.\n",
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"....#.....\n",
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".........#\n",
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"..........\n",
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"..#.......\n",
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".......#..\n",
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"....^.....\n",
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".#..X.....\n",
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"........#.\n",
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"#.........\n",
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"......#...\n"
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]
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},
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{
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"data": {
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"text/plain": [
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"(True, (5, 4, '^'))"
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]
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},
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"execution_count": 19,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"result,pos = move(map)\n",
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"printmap(map)\n",
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"result,pos"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 20,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"True\n",
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"No guard found! Visited 41 cells.\n",
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"....#.....\n",
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"....XXXXX#\n",
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"....X...X.\n",
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"..#.X...X.\n",
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"..XXXXX#X.\n",
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"..X.X.X.X.\n",
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".#XXXXXXX.\n",
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".XXXXXXX#.\n",
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"#XXXXXXX..\n",
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"......#X..\n"
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]
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}
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],
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"source": [
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"print(result)\n",
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"while result:\n",
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" result,pos = move(map,pos)\n",
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"\n",
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"printmap(map)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 21,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"No guard found! Visited 41 cells.\n",
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"....#.....\n",
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"....XXXXX#\n",
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"....X...X.\n",
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"..#.X...X.\n",
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"..XXXXX#X.\n",
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"..X.X.X.X.\n",
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".#XXXXXXX.\n",
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".XXXXXXX#.\n",
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"#XXXXXXX..\n",
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"......#X..\n",
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"Position: (6, 4) facing ^, sofar visited 0 cells.\n",
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"....#.....\n",
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".........#\n",
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"..........\n",
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"..#.......\n",
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".......#..\n",
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"..........\n",
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".#..^.....\n",
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"........#.\n",
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"#.........\n",
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"......#...\n"
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]
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}
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],
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"source": [
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"finished_map = map.copy()\n",
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"map = [list(line.strip()) for line in content]\n",
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"printmap(finished_map)\n",
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"printmap(map)\n",
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"\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 22,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"{(3, 4), (4, 3), (5, 4), (4, 6), (8, 3), (8, 6), (1, 6), (2, 8), (7, 4), (6, 2), (7, 1), (7, 7), (6, 5), (6, 8), (4, 2), (4, 5), (5, 6), (4, 8), (8, 2), (9, 7), (8, 5), (2, 4), (1, 5), (1, 8), (7, 3), (6, 7), (7, 6), (5, 2), (4, 4), (3, 8), (8, 4), (5, 8), (8, 1), (8, 7), (1, 4), (1, 7), (7, 2), (6, 6), (7, 5), (6, 3)}\n"
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]
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}
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],
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"source": [
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"#Prepare list of possible positions for a obstiacle to force guard into a loop and check if it causes a loop\n",
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"def get_visited_positions(map):\n",
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" visited = set()\n",
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" for i, row in enumerate(map):\n",
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" for j, cell in enumerate(row):\n",
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" if cell == 'X':\n",
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" if (i,j) != (start_x,start_y): #ignore the starting position\n",
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" visited.add((i,j))\n",
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" return visited\n",
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"\n",
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"print(get_visited_positions(finished_map))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 23,
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"metadata": {},
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"outputs": [],
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"source": [
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"# create copy of map with additional obstacle at pos\n",
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"def add_obstacle(map, pos):\n",
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" # create a copy of the original map\n",
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" new_map = [row[:] for row in map]\n",
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" # add the obstacle to the new map\n",
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" new_map[pos[0]][pos[1]] = '#'\n",
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" return new_map\n",
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"\n",
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"def check_loop(emptymap,pos):\n",
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" #make copy of map\n",
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" map = add_obstacle(emptymap,pos)\n",
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" # create a set to keep track of visited positions and directions\n",
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" visited = set()\n",
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" # Get the current position of the robot\n",
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" x,y,dir = get_start_position(map)\n",
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" while dir and (x,y,dir) not in visited:\n",
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" visited.add((x,y,dir))\n",
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" # Determine the next position based on the current direction\n",
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" result,pos = move(map,(x,y,dir))\n",
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" x,y,dir = pos\n",
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" \n",
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" if dir and (x,y,dir) in visited:\n",
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" print(f\"Found loop with {len(visited)} with obstical at {pos}\")\n",
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" return True\n",
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" else:\n",
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" print(f\"No loop found after {len(visited)} visited positions.\")\n",
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" return False\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 24,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Found loop with 24 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (3, 4)\n",
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"Found loop with 29 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (4, 3)\n",
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"Found loop with 7 with obstical at (-1, -1, '>')\n",
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"Loop detected at position (5, 4)\n",
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"Found loop with 32 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (4, 6)\n",
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"Found loop with 34 with obstical at (6, 4, '^')\n",
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"Loop detected at position (8, 3)\n",
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"Found loop with 37 with obstical at (-1, -1, '<')\n",
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"Loop detected at position (8, 6)\n",
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"Found loop with 16 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (1, 6)\n",
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"Found loop with 19 with obstical at (-1, -1, '<')\n",
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"Loop detected at position (2, 8)\n",
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"Found loop with 42 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (7, 4)\n",
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"Found loop with 27 with obstical at (-1, -1, '^')\n",
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"Loop detected at position (6, 2)\n",
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"Found loop with 45 with obstical at (-1, -1, '>')\n",
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"Loop detected at position (7, 1)\n",
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"Found loop with 42 with obstical at (8, 6, 'V')\n",
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"Loop detected at position (7, 7)\n",
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"Found loop with 24 with obstical at (-1, -1, '^')\n",
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"Loop detected at position (6, 5)\n",
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"Found loop with 23 with obstical at (-1, -1, '<')\n",
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"Loop detected at position (6, 8)\n",
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"Found loop with 30 with obstical at (-1, -1, '>')\n",
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"Loop detected at position (4, 2)\n",
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"Found loop with 31 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (4, 5)\n",
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"Found loop with 34 with obstical at (-1, -1, '<')\n",
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"Loop detected at position (5, 6)\n",
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"Found loop with 21 with obstical at (-1, -1, '^')\n",
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"Loop detected at position (4, 8)\n",
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"Found loop with 43 with obstical at (-1, -1, '^')\n",
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"Loop detected at position (8, 2)\n",
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"Found loop with 45 with obstical at (8, 5, '<')\n",
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"Loop detected at position (9, 7)\n",
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"Found loop with 40 with obstical at (-1, -1, '^')\n",
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"Loop detected at position (8, 5)\n",
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"Found loop with 10 with obstical at (-1, -1, '>')\n",
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"Loop detected at position (2, 4)\n",
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"Found loop with 15 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (1, 5)\n",
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"Found loop with 19 with obstical at (-1, -1, '^')\n",
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"Loop detected at position (1, 8)\n",
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"Found loop with 41 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (7, 3)\n",
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"Found loop with 22 with obstical at (-1, -1, '^')\n",
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"Loop detected at position (6, 7)\n",
|
||||
"Found loop with 29 with obstical at (6, 5, '<')\n",
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"Loop detected at position (7, 6)\n",
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"Found loop with 29 with obstical at (-1, -1, '>')\n",
|
||||
"Loop detected at position (5, 2)\n",
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||||
"Found loop with 8 with obstical at (-1, -1, '>')\n",
|
||||
"Loop detected at position (4, 4)\n",
|
||||
"Found loop with 20 with obstical at (-1, -1, '<')\n",
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"Loop detected at position (3, 8)\n",
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"Found loop with 41 with obstical at (-1, -1, '^')\n",
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||||
"Loop detected at position (8, 4)\n",
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||||
"Found loop with 18 with obstical at (-1, -1, '^')\n",
|
||||
"Loop detected at position (5, 8)\n",
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||||
"Found loop with 37 with obstical at (5, 2, '^')\n",
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||||
"Loop detected at position (8, 1)\n",
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||||
"Found loop with 51 with obstical at (-1, -1, '<')\n",
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"Loop detected at position (8, 7)\n",
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"Found loop with 11 with obstical at (-1, -1, '>')\n",
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"Loop detected at position (1, 4)\n",
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"Found loop with 30 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (1, 7)\n",
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"Found loop with 40 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (7, 2)\n",
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"Found loop with 20 with obstical at (-1, -1, '>')\n",
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"Loop detected at position (6, 6)\n",
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"Found loop with 43 with obstical at (-1, -1, 'V')\n",
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"Loop detected at position (7, 5)\n",
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||||
"Found loop with 19 with obstical at (5, 4, '^')\n",
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"Loop detected at position (6, 3)\n",
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"Possible loops: 40\n"
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]
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}
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],
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"source": [
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"\n",
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||||
"#Check if a loop is formed by placing an obstacle in one of the visited positions\n",
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||||
"possibles_loops = []\n",
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"for pos in get_visited_positions(finished_map):\n",
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" if check_loop(map,pos):\n",
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" print(f\"Loop detected at position {pos}\")\n",
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" possibles_loops.append(pos)\n",
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"\n",
|
||||
"print(f\"Possible loops: {len(possibles_loops)}\")"
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||||
]
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||||
},
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||||
{
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||||
"cell_type": "code",
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||||
"execution_count": null,
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||||
"metadata": {},
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||||
"outputs": [],
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"source": [
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||||
"printmap(map)"
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||||
]
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||||
},
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||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"metadata": {},
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||||
"outputs": [],
|
||||
"source": []
|
||||
}
|
||||
],
|
||||
"metadata": {
|
||||
"kernelspec": {
|
||||
"display_name": "Python 3",
|
||||
"language": "python",
|
||||
"name": "python3"
|
||||
},
|
||||
"language_info": {
|
||||
"codemirror_mode": {
|
||||
"name": "ipython",
|
||||
"version": 3
|
||||
},
|
||||
"file_extension": ".py",
|
||||
"mimetype": "text/x-python",
|
||||
"name": "python",
|
||||
"nbconvert_exporter": "python",
|
||||
"pygments_lexer": "ipython3",
|
||||
"version": "3.12.8"
|
||||
}
|
||||
},
|
||||
"nbformat": 4,
|
||||
"nbformat_minor": 2
|
||||
}
|
||||
Reference in New Issue
Block a user