func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     long long a, b, c, d;     cin >> a >> b >> c >> d;     long long ans = 0, fl = 0;     if (a != c && b != d)       ans = abs(a - c) + abs(b - d) + 2;     else       ans = abs(a - c) + abs(b - d);     cout << ans <<   n ;   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     long long t;     cin >> t;     while (t--) solve();     return 0;     ;   }   