func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int c, v0, v1, a, l;     cin >> c >> v0 >> v1 >> a >> l;     int d = 1;     int r = v0;     int tmp = v0;     while (1) {       if (r >= c) break;       tmp = tmp + a;       if (tmp > v1) tmp = v1;       r += (tmp - l);       d++;     }     cout << d << endl;     return 0;   }   