#include<iostream>
using namespace std;

int main()
{
	int n,k;
	cin>>n;
	while(n--){
		cin>>k;
		int sum=0;
		while(k){
			sum+=k%10;
			k/=10;
		}
		if(sum==7){
			cout<<"YES"<<endl;
		}else{
			cout<<"NO"<<endl;
		}
	}
	
	return 0;
}