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