func_code_string: #include <bits/stdc++.h>   using namespace std;   long long gcd(long long a, long long b) {     if (b == 0)       return a;     else {       return (gcd(b, (a % b)));     }   }   int main() {     int t;     long long n;     scanf( %d , &t);     for (int i = 1; i <= t; i++) {       cin >> n;       long long a = (long long)4LL * n;       long long b = (long long)(n + 1LL);       long long res = gcd(a, b);       res = (long long)(a) / res;       cout << (res + 1) << endl;     }     return 0;   }   