#include <iostream>

using namespace std;

int main()
{
    int a,b,c,d;
    cin>>a>>b>>c>>d;
    //a,b crescator
    if(a>b)
    {
        int aux=a;
        a=b;
        b=aux;
    }
    //c,d descrescator
    if(c<d)
    {
        int aux=c;
        c=d;
        d=aux;
    }
    cout<<a<<" "<<b<<" "<<c<<" "<<d<<"\n";
    return 0;
}