process.stdin.resume();
process.stdin.setEncoding('utf8');
process.stdin.on('data', function (inputString)
{
  const stringArray = inputString.split(' ');
  const a = Number(stringArray[0]);
  const b = Number(stringArray[1]);
  const c = Number(stringArray[2]);
  let result = 'No';
  
  if (a < b && b < c) {
      result = 'Yes';
  } 
  
  console.log(result);
});
