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

int main(){
	int i,n,x,y,t,c = 0;
	cin>>n>>x>>y;
	for(i = 10;i <= (n - y) / x;i++){
		t = n - i * x;
		if(t % y == 0 && t / y >= 10){
			c++;
//			cout<<i<<" "<<t / y<<endl;
		}
	}
	
	cout<<c;
}


/**************************************************************
	Problem: 1793
	User: admin
	Language: C++
	Result: Accepted
	Time:31 ms
	Memory:2072 kb
****************************************************************/