declare var process: any;
process.stdin.resume();
process.stdin.setEncoding("utf8");
process.stdin.on("data", function(chunk: any) {
  var lines = chunk
    .toString()
    .split("\n")[0]
    .split(" ");
  console.log(lines[0]);
  console.log(lines[1]);
  console.log(lines[2]);
  if (parseInt(lines[0]) + parseInt(lines[1]) >= parseInt(lines[2])) {
    console.log("Yes");
  } else {
    console.log("No");
  }
});
