func_code_string: #include <bits/stdc++.h>   using namespace std;   template <typename T>   void read(T &x) {     cin >> x;   }   template <typename T, typename T0>   void read(T &x, T0 &y) {     cin >> x >> y;   }   template <typename T, typename T0, typename T1>   void read(T &x, T0 &y, T1 &z) {     cin >> x >> y >> z;   }   bool isPowerOfTwo(int x) { return x && (!(x & (x - 1))); }   int digits(int n) {     int x = floor(log10(n)) + 1;     return x;   }   long long int fact(long long int n) {     if (n == 0) return 1;     return n * fact(n - 1);   }   bool sortbysec(const pair<int, int> &a, const pair<int, int> &b) {     return (a.second < b.second);   }   vector<bool> sieve(1000000, true);   void sieve_er() {     sieve[0] = false;     sieve[1] = false;     for (long long int i = 2; i * i <= 1000000; i++) {       if (sieve[i] == true) {         for (long long int j = i * i; j < 1000000; j += i) sieve[j] = false;       }     }   }   vector<long long int> vec;   void divisors(long long int n) {     for (long long int i = 1; i <= sqrt(n); i++) {       if (n % i == 0) {         if (n / i == i)           vec.push_back(i);         else {           vec.push_back(i);           vec.push_back(n / i);         }       }     }   }   long long int total_divisors(long long int n) {     long long int c = 0;     for (long long int i = 1; i <= sqrt(n); i++) {       if (n % i == 0) {         if (n / i == i)           c = c + 1;         else           c = c + 2;       }     }     return c;   }   long long int nCr(long long int n, long long int r) {     long long int ans = 1;     for (long long int i = 0; i < r; i++) {       ans *= n - i;       ans /= i + 1;     }     return ans;   }   long long int power_m(long long int a, long long int b,                         long long int m = 1000000007) {     a %= m;     long long int res = 1;     while (b > 0) {       if (b & 1) res = res * a % m;       a = a * a % m;       b >>= 1;     }     return res;   }   long long int power(long long int a, long long int b) {     long long int res = 1;     while (b > 0) {       if (b & 1) res = res * a;       a = a * a;       b >>= 1;     }     return res;   }   long long int strTo(string s) {     stringstream tmp(s);     long long int x = 0;     tmp >> x;     return x;   }   string NoTo(long long int n) {     ostringstream str1;     str1 << n;     string ans = str1.str();     return ans;   }   void start() {}   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     long long int t;     cin >> t;     while (t--) {       long long int x1, y1, x2, y2;       cin >> x1 >> y1 >> x2 >> y2;       int ans = 0;       if (x1 == x2)         ans = abs(y1 - y2);       else if (y1 == y2)         ans = abs(x1 - x2);       else {         ans += abs(x1 - x2);         ans += 2;         ans += abs(y1 - y2);       }       cout << ans << endl;     }     cerr <<  Time :   << 1000 * ((double)clock()) / (double)CLOCKS_PER_SEC          <<  ms n ;     return 0;   }   