func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       long long int m, x, y, a, b;       cin >> x >> y >> a >> b;       m = abs(x - a) + abs(y - b);       if (x != a && y != b) m = m + 2;       cout << m <<   n ;     }   }   