func_code_string: #include <bits/stdc++.h>   using namespace std;   int xs[8] = {1, 1, 1, 0, 0, -1, -1, -1};   int ys[8] = {-1, 0, 1, -1, 1, -1, 0, 1};   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     int x1, y1, x2, y2;     cin >> x1 >> y1;     cin >> x2 >> y2;     int nx, ny;     int mV = INT_MAX;     for (int i = 0; i < 8; i++) {       nx = xs[i] + x2;       ny = ys[i] + y2;       mV = min(abs(nx - x1) + abs(ny - y1), mV);     }     cout << 2 * mV + 8 <<   n ;   }   