function Main(input) {
  line = input.split(' ');
  var sum = 0;
  for (var i = 0; i < line.length; i++) {
    sum += parseInt(line[i]);
  }
  console.log(sum);
}

function debug() {
  input = document.getElementById('id1').value;
  Main(input);
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));

