ZOJ - 4036 Lucky 7

https://vjudge.net/problem/ZOJ-4036

#include<iostream>
#include<algorithm>
using namespace std;
int main()
{
    
    
	int n;
	cin>>n;
	while(n--)
	{
    
    
		int a,b,t;
		cin>>a>>b;
		
		int f=0;
		for(int i=0;i<a;i++)
		{
    
    
			cin>>t;
			if( !f && (t+b)%7==0) f=1;
		}
		
		if(f) cout<<"Yes\n";
		else cout<<"No\n";
	}
	return 0;
}