#include<stdio.h>
int main()
{
	int X,Y,Z;
	int seat;
	while(~scanf("%d%d%d",&X,&Y,&Z))
	for(seat=0;seat<X/Y;seat++)
	{
		if(X==seat*Y+(seat+1)*Z)
			printf("%d\n",seat);
		if(seat*Y+(seat+1)*Z<X && (seat+1)*Y+(seat+2)*Z>X)
			printf("%d\n",seat);
	}
	return 0;
}