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

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