#include <bits/stdc++.h>
using namespace std;
int read() {
  int x = 0, f = 1;
  char ch;
  while (ch < '0' || ch > '9') {
    if (ch == '-') f = -1;
    ch = getchar();
  }
  while (ch >= '0' && ch <= '9') {
    x = x * 10 + ch - '0';
    ch = getchar();
  }
  return f * x;
}
int main() {
  int a, b, c;
  a = read();
  b = read();
  if (a + b >= c) {
    cout << "Yes";
  } else {
    cout << "No";
  }
  return 0;
}
