func_code_string: #include <bits/stdc++.h>   using namespace std;   bool debug = true;   long long n, m, a, b;   int main(int argc, char* argv[]) {     cin >> n >> m >> a >> b;     long long r = n % m;     cout << min(r * b, (m - r) * a);     while (clock() <= 300) {     }     return 0;   }   