hdu 1049 jump worm

#include<iostream>
using namespace std;
int main(){
	int n,u,d,time=0;
	while(cin>>n>>u>>d){
		if(n==0)
			break;
			time=1;
			while(n>0){
				if(time%2==0)
					n+=d;
				else
					n-=u;
				time++;
			}
			cout<<time-1<<endl;
	}
return 0;
}