func_code_string: #include <bits/stdc++.h>   using namespace std;   int m, n, i;   double o;   int main() {     cin >> m >> n;     for (i = 1; i <= m; i++)       o += i * (pow((double)i / m, n) - pow((double)(i - 1) / m, n));     cout << o << endl;     return 0;   }   