#include <bits/stdc++.h>

using namespace std;


int main(){

    int a, b, c, d, e, f, g;
    cin >> a >> b >> c >> d >> e >> f >> g;

    if(500*a+100*b+50*c+10*d+5*e+f == g) {
        cout << "YES" << endl;
    }
    else{
        cout << "NO" << endl;
    }

    
    return 0;
}