func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int r1, r2, c1, c2;     cin >> r1 >> c1 >> r2 >> c2;     if (r1 == r2 || c1 == c2) {       cout << 1 <<    ;     } else {       cout << 2 <<    ;     }     if ((r1 + c1) % 2 != (r2 + c2) % 2) {       cout << 0 <<    ;     } else {       if (r1 + c1 == r2 + c2 || r1 - c1 == r2 - c2) {         cout << 1 <<    ;       } else {         cout << 2 <<    ;       }     }     cout << max(abs(r1 - r2), abs(c1 - c2)) <<   n ;     return 0;   }   