C++ :

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b;
	cin>>a>>b;
	if(a>b)swap(a,b);
	cout<<a<<" "<<b<<endl;
	return 0;
}

Java :

import java.util.Scanner;
public class Main
{   
	public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
		if(a>b) {
			System.out.println(b+" "+a);
		}else {
			System.out.println(a+" "+b);
		}
		
		
		
    }
}

Python :

a,b=map(int,input().split())
if a>b:
    print(b,a)
else: 
    print(a,b)