题解

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    while(n--){
        int x,sum=0;
        cin>>x;
        while(x!=0){
            sum+=x%10;
            x/=10;
        }
        if(sum%7==0){
            cout<<"Yes\n";
        }else{
            cout<<"No\n";
        }
    }
    return 0;
}