#include <iostream>
using namespace std;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	int h, a, b;
	
	cin >> h >> a >> b;
	
	if (h <= a) cout << 1;
	else {
		cout << (h - a + (a - b) - 1) / (a - b);

	}
	return 0;
}