#include <bits/stdc++.h>
#define int long long
using namespace std;

signed main(){
  double A, B, C, D;
  cin >> A >> B >> C >> D;
  
  cout << fixed << setprecision(10);
  cout << abs(A-C) << endl;
  cout << abs(B-D) << endl;
  cout << (abs(A-C)+abs(B-D))/2.0 << endl;
}