func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int x1, x2, y1, y2;       cin >> x1 >> y1 >> x2 >> y2;       if (x1 == x2 || y1 == y2)         cout << abs(x1 - x2) + abs(y1 - y2) << endl;       else         cout << abs(x1 - x2) + abs(y1 - y2) + 2 << endl;     }     return 0;   }   