func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n, m;     cin >> n >> m;     long long a = n, b = m;     while (1) {       if (a <= 0 || b <= 0) break;       if (a >= 2 * b) {         a %= 2 * b;         continue;       }       if (b >= 2 * a) {         b %= 2 * a;         continue;       }       break;     }     cout << a <<     << b << endl;   }   