#include<bits/stdc++.h> using namespace std; int a , b , c , d; int main() { cin >> a >> b >> c >> d; if( a + b > 10 ) cout << a * b; else if( b + c > 5 ) cout << c * d; else if( d < 10 || a * c > 100 ) cout << "Yes"; else cout << "No";

}