HDU 5665 Lucky

Problem Description

     Chaos August likes to study the lucky numbers.

     For a set of numbers S,we set the minimum non-negative integer,which can't be gotten by adding the number in S,as the lucky number.Of course,each number can be used many times.

     Now, given a set of number S, you should answer whether S has a lucky number."NO" should be outputted only when it does have a lucky number.Otherwise,output "YES".

 

Input

     The first line is a number T,which is case number.

     In each case,the first line is a number n,which is the size of the number set.

     Next are n numbers,means the number in the number set.

    1≤n≤105,1≤T≤10,0≤ai≤109 .

 

Output

     Output“YES”or “NO”to every query.

 

Sample Input

   
   
   
   

    
    
    
    1
1
2
   
   
   
   

 

Sample Output

NO
简单题，判断有没有0和1即可
#pragma comment(linker, "/STACK:102400000,102400000")
#include<map>
#include<set>
#include<cmath>
#include<queue>
#include<stack>
#include<bitset>
#include<cstdio>
#include<string>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<functional>
using namespace std;
typedef long long LL;
const int low(int x) { return x&-x; }
const int INF = 0x7FFFFFFF;
const int mod = 1e9 + 7;
const int maxn = 2e5 + 10;
int T, n, m;

int main()
{
    scanf("%d", &T);
    while (T--)
    {
        scanf("%d", &n);
        int f1 = 0, f2 = 0, x;
        while (n--)
        {
            scanf("%d", &x);
            if (x == 0) f1 = 1;
            if (x == 1) f2 = 1;
        }
        printf("%s\n", f1&&f2 ? "YES" : "NO");
    }
    return 0;
}