func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 1100;   long long x, y;   int n;   int main() {     std::ios::sync_with_stdio(false);     while (cin >> n) {       long long x1, x2, y1, y2;       x1 = y1 = 1000000000;       x2 = y2 = -1000000000;       for (int i = 0; i < n; ++i) {         cin >> x >> y;         if (x < x1) x1 = x;         if (y < y1) y1 = y;         if (x > x2) x2 = x;         if (y > y2) y2 = y;       }       unsigned long long s = max(abs(x2 - x1), abs(y2 - y1));       cout << s * s << endl;     }     return 0;   }   