"use strict";
function Main(input) {
    let n = input.split("\n")[0].split(/\s/).map((v) => v - 0) 
    let ans = (n[0] == n[1]) && (n[1] == n[2]) && (n[0] == n[2]);
    console.log(ans ? "Yes" : "No");
}
 Main(require("fs").readFileSync("/dev/stdin", "utf8"));
