n,m=map(int,input().split())
a=list(map(int,input().split()))
ans=0
odd =0
for i in a:
    if i%2 != 0:
        ans+=i
        odd+=1
    else:
        if odd >= m:
            print(ans)
            ans=0
            odd=0
if odd >= m:
    print(ans)