HDU - 5665



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".



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.


























.



Output“YES”or “NO”to every query.
Time Limit: 1000MS | Memory Limit: 65536KB | 64bit IO Format: %I64d & %I64u |
Description












Input







































Output




Sample Input
1 1 2
Sample Output
NO
Source
BestCoder Round #80
//题意:
给你n个数,问你用这些数相加,是否可以得到最小的非负整数(0和1)?
//思路:
只用判断给的数中是否有0和1就行了,只有一个也是不行的
#include<stdio.h>
#include<string.h>
#include<algorithm>
#include<iostream>
#define INF 0x3f3f3f3f
#define ll long long
#define N 1010
#define M 1000000007
using namespace std;
int main()
{
int t;
scanf("%d",&t);
while(t--)
{
int n;
scanf("%d",&n);
bool f1=false,f2=false;
for(int i=0;i<n;i++)
{
int a;
scanf("%d",&a);
if(a==1)
f1=true;
if(a==0)
f2=true;
}
if(f1&&f2) printf("YES\n");
else printf("NO\n");
}
return 0;
}