#include using namespace std; int howManyGames(int p, int d, int m, int s) { auto count = 0; while (s >= p) { count ++; s -= p; p -= d; if (p < m) p = m; } return count; // Return the number of games you can buy } int main() { int p; int d; int m; int s; cin >> p >> d >> m >> s; int answer = howManyGames(p, d, m, s); cout << answer << endl; return 0; }