n,m = map(int,input().split())
a = list(map(int,input().split()))

cnt = 0
res = 0
for i in a:
    if i % 2 == 0:
        if res > 0 and cnt >= m:
            print(res)
        res = 0
        cnt = 0
    else:
        res += i
        cnt += 1
else:
    if res != 0 and cnt >= m:
        print(res)