Algorithm: Max Counters

Question

I have the following problem:

You are given N counters, initially set to 0, and you have two possible operations on them:

• increase(X) − counter X is increa

Answer 1

def solution(N, A):
    res = [0] * N
    maxV, minV = 0, 0
    for x in A:
        if 1 <= x <= N:
            res[x-1] = max(res[x-1], minV) + 1
            maxV = max(maxV, res[x-1])
        else: minV = maxV
    for i in range(N):
        res[i] = max(res[i], minV)
    return res