from collections import Counter, deque

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

MOD = 10 ** 9 + 7

c = Counter()
for a in A:
    if a == 0:
        c['0'] += 1
    elif a < 0:
        c['-'] += 1
    else:
        c['+'] += 1

if c['-'] + c['+'] < K:
    print(0)
elif (c['-'] == N and K % 2 == 1) or (N == K and c['-'] % 2 == 1):
    def f(x):
        if x == 0:
            return 10 ** 9
        else:
            return abs(x)


    A = sorted(A, key=f)
    ans = 1
    for i in range(K):
        ans *= A[i]
        ans %= MOD

    print(ans)
else:
    A = sorted(A, key=lambda x: abs(x), reverse=True)
    plus = deque()
    minus = deque()

    for i in range(K):
        if A[i] >= 0:
            plus.append(A[i])
        else:
            minus.append(A[i])

    if len(minus) % 2 == 1:
        p = None
        m = None
        for i in range(K, N):
            if A[i] >= 0 and p is None:
                p = A[i]
            if A[i] < 0 and m is None:
                m = A[i]
            if p is not None and m is not None:
                break
        if m is None and p is None:
            pass
        elif m is None and p is not None:
            minus.pop()
            plus.append(p)
        elif m is not None and p is None:
            plus.pop()
            minus.append(m)
        elif minus[-1] * m > plus[-1] * p:
            plus.pop()
            minus.append(m)
        else:
            minus.pop()
            plus.append(p)

    ans = 1
    while plus:
        ans *= plus.popleft()
        ans %= MOD
    while minus:
        ans *= minus.popleft()
        ans %= MOD

    print(ans)


### FIXED CODE ###

from collections import Counter, deque

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

MOD = 10 ** 9 + 7

n_minus = 0
for a in A:
    if a < 0:
        n_minus += 1
if N == K:
    ans = 1
    for a in A:
        ans *= a
        ans %= MOD
    print(ans)
elif n_minus == N and K % 2 == 1:
    def f(x):
        if x == 0:
            return 10 ** 9
        else:
            return abs(x)


    A = sorted(A, key=f)
    ans = 1
    for i in range(K):
        ans *= A[i]
        ans %= MOD

    print(ans)
else:
    A = sorted(A, key=lambda x: abs(x), reverse=True)
    plus = deque()
    minus = deque()

    for i in range(K):
        if A[i] >= 0:
            plus.append(A[i])
        else:
            minus.append(A[i])

    if len(minus) % 2 == 1:
        if len(plus) == 0:
            minus.pop()
            for a in A[K:]:
                if a >= 0:
                    plus.append(a)
                    break
        else:
            p = None
            m = None
            for a in A[K:]:
                if a >= 0 and p is None:
                    p = a
                if a < 0 and m is None:
                    m = a
                if p is not None and m is not None:
                    break

            if m is None:
                minus.pop()
                plus.append(p)
            elif p is None:
                plus.pop()
                minus.append(m)
            elif minus[-1] * m > plus[-1] * p:
                plus.pop()
                minus.append(m)
            else:
                minus.pop()
                plus.append(p)

    ans = 1
    while plus:
        ans *= plus.popleft()
        ans %= MOD
    while minus:
        ans *= minus.popleft()
        ans %= MOD

    print(ans)