傻子专用

#include <bits/stdc++.h>
using namespace std;

int main() {
	int a, b, c, n = 0;
	cin >> a >> b >> c;
	for (int i = 1; i <= a; i++)
		for (int j = 1; j <= a; j++)
			if (i * b + j * c == a)
				n++;
	cout << n;
	return 0;
}