str=input()
a,b=str.split()
a=int(a)
b=int(b)
if (abs(a)>abs(b)):
	if(a<0 and a!=abs(b)):print('NO')
	elif(a%b==0):print(int(a/b))
	else:print('NO')
else:
	if(b%a==0):print(int(b/a))
	else:print('NO')