Ancient Go---hdu5546(dfs爆搜CCPC题目)

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5546

题意就是两个人下围棋,问在下一颗x是否能杀死o,'.'是空位子;

枚举所有的点,判断是否合法即可;

#include <iostream>
#include <stdio.h>
#include <string.h>
#include <string>
#include <vector>
#include <algorithm>
#include <map>
#include <queue>
#include <stack>
#include <math.h>

using namespace std;

#define met(a, b) memset(a, b, sizeof(a))
#define N 103
#define INF 0x3f3f3f3f

typedef long long LL;

int dir[4][2] = { {1,0}, {-1,0}, {0,-1}, {0,1} };
char s[N][N];
int vis[N][N];

int OK(int x, int y)
{
    return (x<9 && y<9 && x>=0 && y>=0);
}

int check(int x, int y)
{
    vis[x][y] = 1;
    for(int i=0; i<4; i++)
    {
        int px = x+dir[i][0];
        int py = y+dir[i][1];
        if(!OK(px, py) || vis[px][py])continue;
        if(s[px][py] == '.')
            return 1;
        if(s[px][py] == 'o' && check(px, py))
            return 1;
    }
    return 0;
}

int Judge(int x, int y)
{
    for(int i=0; i<4; i++)
    {
        int px = x + dir[i][0];
        int py = y + dir[i][1];
        if(!OK(px, py))continue;
        if(s[px][py] == 'o')
        {
            met(vis, 0);
            if(!check(px, py))
                return 1;///不能走出去说明找到了;
        }
    }
    return 0;
}

int solve()
{
    for(int i=0; i<9; i++)
    {
        for(int j=0; j<9; j++)
        {
            if(s[i][j] == 'x' || s[i][j] == 'o')continue;
            s[i][j] = 'x';
            if(Judge(i, j))return 1;
            s[i][j] = '.';
        }
    }
    return 0;
}

int main()
{
    int T, t = 1;
    scanf("%d", &T);
    while(T--)
    {
        for(int i=0; i<9; i++)
        {
            scanf("%s", s[i]);
        }
        int ans = solve();
        if(ans) printf("Case #%d: Can kill in one move!!!
", t++);
        else printf("Case #%d: Can not kill in one move!!!
", t++);
    }
    return 0;
}
View Code
原文地址:https://www.cnblogs.com/zhengguiping--9876/p/5731467.html