"use strict";
//テストの入力を受け取る
function Main(input) {
    const [A, B] = input.split("\n").map(i => {
        if (i === "") {
            return "";
        }
        else {
            return i.split("").sort().reduce((accum, current) => accum += current);
        }
    });
    if (A === B) {
        console.log("YES");
    }
    else {
        console.log("NO");
    }
}
Main(require("fs").readFileSync("/dev/stdin", "utf8"));
// Main(`hurjztkyua
// urjukzthua
// `);
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