Time Limit: 1000MS | Memory Limit: 65536K | |
Total Submissions: 10936 | Accepted: 6531 |
Description
int maze[5][5] = { 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, };
Input
Output
Sample Input
0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 0 1 1 1 0 0 0 0 1 0
Sample Output
(0, 0) (1, 0) (2, 0) (2, 1) (2, 2) (2, 3) (2, 4) (3, 4) (4, 4)
思路:DFS题,找到每一条路取最短路径
AC代码:
#include <cstdio> #include <cstring> #include <algorithm> #include <iostream> #define INF 0x3fffffff using namespace std; int mp[5][5]; int ans; struct node { int x; int y; }lu[30], pa[30]; bool vis[8][8]; const int dir[4][2] = {-1, 0, 1, 0, 0, 1, 0, -1}; void dfs(int x, int y, int deep) { if(x == 4 && y == 4 && deep < ans) { ans = deep; for(int i = 0; i < deep; i ++) { pa[i].x = lu[i].x; pa[i].y = lu[i].y; } } for(int i = 0; i < 4; i ++) { int tx = x + dir[i][0]; int ty = y + dir[i][1]; if(tx < 0 || tx > 4 || ty < 0 || ty > 4) continue; if(mp[tx][ty] == 0 && !vis[tx][ty]) { vis[tx][ty] = true; lu[deep].x = tx; lu[deep].y = ty; dfs(tx, ty, deep + 1); vis[tx][ty] = false; } } } int main() { for(int i = 0; i < 5; i ++) { for(int j = 0; j < 5; j ++) { scanf("%d", &mp[i][j]); } } memset(lu, 0, sizeof(lu)); memset(pa, 0, sizeof(pa)); memset(vis, false, sizeof(vis)); ans = INF; lu[0].x = lu[0].y = 0; vis[0][0] = true; dfs(0, 0, 1); for(int i = 0; i < ans; i ++) { printf("(%d, %d)\n", pa[i].x, pa[i].y); } return 0; }
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原文地址:http://blog.csdn.net/u014355480/article/details/47039587