func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     double l, x, v1, v2, k;     cin >> l >> x >> v1 >> v2 >> k;     double n = ceil(l / k);     double t2, t1;     t2 = x / (v2 * (n * ((v1 + v2) / (v2 - v1)) - (n - 1)));     t1 = t2 * (v1 + v2) / (v2 - v1);     double odp = t1 * n + t2 * (n - 1);     cout << setprecision(8) << odp;   }   