ZOJ 2507 Let's play a game

 题目链接：http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=1507

MisereNim博弈。代码如下：

//============================================================================
// Name        : test.cpp
// Author      : 
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>
#include <math.h>
#include <stdio.h>
#include <cstdio>
#include <algorithm>
#include <string.h>
#include <string>
#include <sstream>
#include <cstring>
#include <queue>
#include <vector>
#include <functional>
#include <cmath>
#include <set>
#define SCF(a) scanf("%d", &a)
#define IN(a) cin>>a
#define FOR(i, a, b) for(int i=a;i<b;i++)
#define Infinity 999999999
#define NInfinity -999999999
#define PI 3.14159265358979323846
#define MAXN 1000000005
#define RATIO (sqrt(5.0)+1.0)/2.0
typedef long long Int;
using namespace std;

int main()
{
    int t;
    int n;
    SCF(t);
    while (t--)
    {
        SCF(n);
        int ans = 0;
        int num;
        bool flag = false;
        FOR(i, 0, n)
        {
            SCF(num);
            if (num > 1)
                flag = true;
            ans = ans^num;
        }
        if (flag)
        {
            if (ans == 0)
                printf("2\n");
            else
                printf("1\n");
        }
        else
        {
            if (ans == 0)
                printf("1\n");
            else
                printf("2\n");
        }
    }
    return 0;
}