#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;
}
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