var a,b,c,d,n,i,j,s:longint;
begin
read(n,a,b);
c:=n div a+1;
d:=n div b+1;
for i:=10 to c do
for j:=10 to d do
if (a*i)+(b*j)=n then inc(s);
write(s);
end.
/**************************************************************
	Problem: 1793
	User: admin
	Language: Pascal
	Result: Wrong Answer
****************************************************************/