Lucky
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 213 Accepted Submission(s): 143
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".
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 .
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
1
1
2
Sample Output
NO
Source
思路:
自然数的定义:
用以计量事物的件数或表示事物次序的数。即用数码(0,被目前多数教材和国外学术性教材所认同)1,2,3,4,……所表示的数(有争议) 。表示物体个数的数叫自然数,自然数由0(1,有争议)开始,一个接一个,组成一个无穷的集体。
辣么其实题目就变得很简单了,如果有0,有1,那么就能达到目的,否则就不能达到目的、
AC代码:
#include<stdio.h>
#include<string.h>
using namespace std;
int a[100050];
int main()
{
int t;
scanf("%d",&t);
while(t--)
{
int n;
scanf("%d",&n);
for(int i=0;i<n;i++)
{
scanf("%d",&a[i]);
}
int cont0=0;
int cont1=0;
for(int i=0;i<n;i++)
{
if(a[i]==0)cont0++;
if(a[i]==1)cont1++;
}
if(cont0>0&&cont1>0)
{
printf("YES\n");
}
else printf("NO\n");
}
}