# April Sum of Odd



def main():

    N,M = map(int, input().split())
    A = list(map(int, input().split()))

    tot = 0
    cnt = 0
    for a in A:
        if a % 2 == 1:
            cnt += 1
            tot += a
        else:
            if cnt >= M:
                print(tot)
                tot = 0
                cnt = 0

    if tot != 0:
        print(tot)

if __name__ == "__main__":
    main()