const main = (standardInput) => {
    const lengthList = standardInput.split(' ');
    const a = Number.parseInt(lengthList[0]);
    const b = Number.parseInt(lengthList[1]);
    const c = Number.parseInt(lengthList[2]);

    if(a<b && b < c){
      console.log("Yes");
    }else{
      console.log("No");
    }
}

main(require('fs').readFileSync('/dev/stdin', 'UTF-8'));

