#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c,d;
    cin>>a>>b>>c>>d;
    if(a<b) swap(a,b);
    if(a<c) swap(a,c);
    if(a<d) swap(a,d);
    if(b<c) swap(b,c);
    if(b<d) swap(b,d);
    if(c<d) swap(c,d);
    cout<<a<<" "<<b<<" "<<c<<" "<<d;
}
/**************************************************************
	Problem: 1705
	User: yangjunwen
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/