A = input().split()
B = input().split()

try:
    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)
except IndexError:
    print("")