from sys import stdin

def main():
    N, M = map(int, input().split())
    A = list(map(int, input().split())) + [0]

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

input = lambda: stdin.readline()
main()