function main (input) {
  const S = input;
  var a = S.indexOf('a');
  var b = S.indexOf('b');
  var c = S.indexOf('c');

  if (a >= 0 && b >= 0 && c >= 0){
    console.log('Yes');
  } else {
    console.log('No');
  }
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'));