Stepik_Ulitka

#include <iostream>
using namespace std;

int main()
{
    int height, a, b;
    int sum = 0, run = 0;
    cin >> height >> a >> b;
    while (sum < height)
    {
        sum = sum + a;
        if (sum >= height)
        {
            run++;
            break;
        }
        sum = sum - b;
        run++;
    }
    cout << run;
    return 0;
}