function yesNoRange(){
    var Arr = x.split(" ");
    var a = Arr[0] -0;
    var b = Arr[1] -0;
    var c = Arr[2] -0;

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

var x = require('fs').readFileSync('/dev/stdin', 'utf8');

yesNoRange(x)
