You are given nonnegative integers a and b (a ≤ b), and a positive integer x. Among the integers between a and b, inclusive, how many are divisible by x?
a,b,x=map(int,input().split())

print(b//x-a//x if a!=0 else b//x-a//x+1)

a,b,x=map(int,input().split())
print(b//x-(a-1)//x)
