A = input().split()
B = input().split()
C = 0
D = 0
for x in range(int(A[0])):
    if 1 == int(B[x]) % 2:
        C = C + int(B[x])
        D = D + 1
    else:
        if C != 0:
            if D >= int(A[1]):
                print(C)
                C = 0
                D = 0

if D >= int(A[1]):
    print(C)