<reponame>diofeher/ctf-writeups
def solution(A, B, K):
    if A % K == 0:
        return (B - A) // K + 1
    else:
        return (B - (A - A % K )) // K
def solution(A, B, K):
    if A % K == 0:
        return (B - A) // K + 1
    else:
        return (B - (A - A % K )) // K