Problem:
Swapping Two Numbers

Write a program which reads two integers x and y, and prints them in ascending order.

Input

The input consists of multiple datasets. Each dataset consists of two integers x and y separated by a single space.

The input ends with two 0 (when both x and y are zero). Your program should not process for these terminal symbols.

Output

For each dataset, print x and y in ascending order in a line. Put a single space between x and y.

Constraints

0 ≤ x, y ≤ 10000

the number of datasets ≤ 3000

Sample Input

3 2
2 2
5 3
0 0

Sample Output

2 3
2 2
3 5

Solution in C (judge verdict: Time Limit Exceeded)

#include <stdio.h>

int main(void)
{
  int a, b, temp;
  int t = 1;

  scanf("%d %d", &a, &b);

  while(t==1) {
    if(a == 0 && b == 0)
      t = 0;
    else { 
    if(a > b)
      printf("%d %d", a, b);
    else
      printf("%d %d", b, a);
    }
  }

  return 0;
}