#include <bits/stdc++.h>
using namespace std;

int main() {
    
   int A, B, C;
   cin >> A >> B >> C;

if (A+B>C) {
    cout <<  "Yes" << endl;
}
if (A+B=C) {
cout <<  "Yes" << endl;
}
else if { 
    cout<<  "No"  <<endl;
  }
}

