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: Wrong Answer)

#include<iostream>
using namespace std;
int main(){
	int i,b,c;
		for(i,b=1;i,b<10000;i++){
		cin>>i>>b;
		if(i> b){
			swap(i,b);
		}

		cout<<i<<" "<<b<<endl;
	}
}