XidianOJ 1073 Nunchakus

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <queue>
#include <vector>
using namespace std;

int f[10001];

int main(){
    int time,T;
    scanf("%d",&T);
    for (time=1;time<=T;time++){
        int n,i,j;
        int L[101],sum = 0;
        scanf("%d",&n); 
        for (i=1;i<=n;i++){
            scanf("%d",&L[i]);
            sum += L[i];
        } 
        int SIZE = sum / 2;
            memset(f,0,sizeof(f));
            for (i=1;i<=n;i++){
                for (j=SIZE;j>=L[i];j--){
                    f[j] = max(f[j-L[i]]+L[i],f[j]);
                }
            }
            int res = sum - 2*f[SIZE]; 
        //    printf("%d %d\n",sum,f[SIZE]);
            if (res != 0) {
                printf("No\n");
            }
            else {
                printf("Yes\n");
            }

    }
    return 0;
}