"use strict";

function Main(input) {
    var input=input.split(" ");
    for(var i=0;i<input.length;i++)
        input[i]=parseInt(input[i],10);
    if(input[0] < input[1] && input[1] < input[2])
        console.log("Yes\n");
    else
        console.log("No\n");
}

function debug(){
	var input = document.getElementById("input").value;
	Main(input);
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));