Problem:
Score : 100 points

Problem Statement

Given are two strings S and T consisting of lowercase English letters. Concatenate T and S in this order, without space in between, and print the resulting string.

Constraints

S and T are strings consisting of lowercase English letters.

The lengths of S and T are between 1 and 100 (inclusive).

Input

Input is given from Standard Input in the following format:

S T

Output

Print the resulting string.

Sample Input 1

oder atc

Sample Output 1

atcoder

When S = oder and T = atc, concatenating T and S in this order results in atcoder.

Sample Input 2

humu humu

Sample Output 2

humuhumu

Solution in JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

"use strict";
process.stdin.resume();
process.stdin.setEncoding("utf-8");

function print(x) {
  console.log(x);
}

let inputString = "";
let currentLine = 0;

process.stdin.on("data", inputStdin => {
  inputString += inputStdin;
});
process.stdin.on("end", () => {
  inputString = inputString.split("\n");
  main();
});
function readline() {
  return inputString[currentLine++];
}

// ************************ Ignore above this Line ******************************
// **************************** Main Code Start *********************************

function main() {

  var ar = readline().split(" ");
  var a = ar[0], b = ar[1];
  var L1 = a.length;
  var L2 = b.length;

  print(L1 > L2 ? b + "" + a : a + "" + b);

}