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'));
