func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int vp, vd, t, f, c;     cin >> vp >> vd >> t >> f >> c;     int vs = vd - vp;     if (vp > vd) {       cout << 0;       return 0;     }     if (vp == vd) {       cout << 0;       return 0;     }     double d = vp * t;     d += d / (1.0 * vs) * vp;     cerr << d << endl;     if (int(d) >= c) {       cout << 0;       return 0;     }     int ans = 1;     while ((int)d < c) {       d += (d / vd + f) * vp;       d += (d / vs) * vp;       if (d - c > -1e-12) {         cout << ans;         return 0;       }       ans++;     }     cout << ans << endl;   }   