N,M=map(int,input().split())
S=[int(i) for i in input().split()]
S+=[0]
s=0
num=0
for i in range(N+1):
    if S[i]%2==0:
        for j in range(s,i):
            num+=S[j]
        if num!=0 and i-s>=M:
            print(num)
        num=0
        s=i+1