'use strict';
(function(stdin) {
  var line = stdin.split('\n');
  var param = line[0].split(' ').map(Number);
  var result = (function(a,b,c) {
    return {true:'Yes',false:'No'}[(a < b && b < c)];
 
  }(
    param[0],param[1],param[2]
  ));
  console.log(result);
}(require('fs').readFileSync('/dev/stdin', 'utf8')));