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 C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>
int main()
{
  int i, a, num;
  int c = 0;

  scanf("%d", &num);

  for (a = num; a < 100000; a++)
  {c=0;

    for (i = 2; i < a; i++)
    {

      if (a % i == 0)
      {
        c++;
        break;
      }
    }

    if (c == 0)
    {
      break;
    }
  }
  printf("%d", a);
  return 0;
}