#include <iostream>
using namespace std;
int main()
{
   int n = 4;
   int arr [n];

   for ( int i = 0 ; i < n ; i ++ )
   {
    cin >> arr [i];
   }

   for ( int i = 0 ; i < n ; i ++ )
   {
     for ( int r = 0 ; r < n - 1 ; r ++ )
       {
           if ( arr[r] > arr[r + 1] )
           {
            swap ( arr[r] , arr[r + 1] );
           }
       }
   }

   for ( int i = 0 ; i < n ; i ++ )
   {
    cout << arr[i] <<" ";
   }
    return 0;
}