def main():
    n, m = map(int, input().split())
    A = list(map(int, input().split())) + [0]
    length = 0
    s = 0
    for a in A:
        if a & 1:
            length += 1
            s += a
        else:
            if length >= m: print(s)
            length = 0
            s = 0



if __name__ == '__main__':
    main()