UVa 10363 - Tic Tac Toe

题目:给你一个井字棋的状态,判断是否合法。

分析:枚举。直接枚举多有情况判断即可。

合法状态有三种情况:(X先下子)

1.X赢,则O不能赢,且X比O多一子;

2.O赢,则X不能赢,且O和X子一样多;

3.没人赢,此时O的子和可能和X一样多,也可能少一个。

说明:简单题(⊙_⊙)。

#include <algorithm>
#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
#include <cmath>

using namespace std;

char maps[4][4];

int win(char c)
{
	if (maps[0][0] == c && maps[0][1] == c && maps[0][2] == c) return 1;
	if (maps[0][0] == c && maps[1][0] == c && maps[2][0] == c) return 1;
	if (maps[0][0] == c && maps[1][1] == c && maps[2][2] == c) return 1;
	if (maps[1][0] == c && maps[1][1] == c && maps[1][2] == c) return 1;
	if (maps[2][0] == c && maps[2][1] == c && maps[2][2] == c) return 1;
	if (maps[0][1] == c && maps[1][1] == c && maps[2][1] == c) return 1;
	if (maps[0][2] == c && maps[1][2] == c && maps[2][2] == c) return 1;
	if (maps[0][2] == c && maps[1][1] == c && maps[2][0] == c) return 1;
	return 0;
}

int main()
{
	int n;
	while (~scanf("%d",&n))
	while (n --) {
		for (int i = 0 ; i < 3 ; ++ i)
			scanf("%s",maps[i]);

		int X_count = 0,O_count = 0;
		for (int i = 0 ; i < 3 ; ++ i)
		for (int j = 0 ; j < 3 ; ++ j) {
			X_count += (maps[i][j] == 'X');
			O_count += (maps[i][j] == 'O');
		}

		int X_win = win('X'),O_win = win('O');
		if (X_count == O_count+1 && X_win && !O_win ||
		    X_count == O_count && O_win && !X_win ||
			(X_count == O_count || X_count == O_count+1) && !X_win && !O_win)
			printf("yes\n");
		else printf("no\n");
	}
    return 0;
}
时间: 2024-10-12 20:20:50

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