#include<iostream> #include<algorithm> const int MAX = 1000; int main() { long long int X[MAX], Y[MAX]; long long int x, y; int cnt = 0; int i = 0, j = 0; while (std::cin >> x >> y) { if(x == 0 && y == 0) break; X[i++] = x; Y[j++] = y; cnt++; } std::sort(X, X + cnt); std::sort(Y, Y + cnt); std::cout << X[0] << " " << Y[0] << " " << X[cnt-1] << " " << Y[cnt-1] << std::endl; }