#include <iostream> using namespace std; int main() { int x1,y1,x2,y2; cin>>x1>>y1>>x2>>y2; int dx=x2-x1; int dy=y2-y1; int dx3=-dy; int dy3=dx; int x3=x1+dx3; int y3=y1+dy3; int x4=x2+dx3; int y4=y2+dy3; cout<<x4<<" "<<y4<<" "<<x3 <<" "<<y3<<endl; return 0; }