#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b;
	c=a;
	if(a>b) {a=b;
	b=c;
	cout<<a<<b;}
	else cout<<a<<" "<<b;
	return 0;
	}
/**************************************************************
	Problem: 1675
	User: ljl2
	Language: C
	Result: Compile Error
****************************************************************/