from sys import stdin
import sys
import math
from functools import reduce
import functools
import itertools
from collections import deque,Counter,defaultdict
from operator import mul
import copy
# ! /usr/bin/env python
# -*- coding: utf-8 -*-
import heapq
sys.setrecursionlimit(10**6)
# INF =  float("inf")
INF = 10**18
import bisect
import statistics
mod = 10**9+7
# mod = 998244353



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

import numpy as np

x = np.argsort(list(map(lambda x: -abs(x), A)))
B = []
C = []

for xx in x:
    B.append(A[xx])
    C.append(np.sign(A[xx]))

ans = 1
s = 1
flag4 = 0

for i in range(K):
    s *= C[i]

if s < 0:
    p = np.sign(B[K-1])
    flag1 = 0
    for i in range(K-1,-1,-1):
        if C[i] == p*(-1):
            idx1 = i
            flag1 = 1
            break

    flag2 = 0
    for i in range(K,N):
        if C[i] == p*(-1):
            idx2 = i
            flag2 = 1
            break

    if flag1 == 1:
        flag3 = 0
        for i in range(K,N):
            if C[i] == p:
                idx3 = i
                flag3 = 1
                break

    if flag1 and flag2 and flag3:
        if max(abs(B[K-1])*abs(B[idx3]) <= abs(B[idx1])*abs(B[idx2])):
            B[K-1] = B[idx2]
        else:
            B[idx1] = B[idx3]
    elif flag1 and (not flag2) and flag3:
        B[idx1] = B[idx3]
    elif flag1 and flag2 and (not flag3):
        B[idx2] = B[idx3]
    elif (not flag1) and flag2:
        B[idx2] = B[idx3]
    else:
        flag4 = 1

if flag4:
    for i in range(N-1,N-K-1,-1):
        ans = (ans * (B[i] % mod)) % mod
else:
    for i in range(K):
        ans = (ans * (B[i] % mod)) % mod

print(ans % mod)

### FIXED CODE ###

from sys import stdin
import sys
import math
from functools import reduce
import functools
import itertools
from collections import deque,Counter,defaultdict
from operator import mul
import copy
# ! /usr/bin/env python
# -*- coding: utf-8 -*-
import heapq
sys.setrecursionlimit(10**6)
# INF =  float("inf")
INF = 10**18
import bisect
import statistics
mod = 10**9+7
# mod = 998244353

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

import numpy as np

x = np.argsort(list(map(lambda x: -abs(x), A)))
B = []
C = []

for xx in x:
    B.append(A[xx])
    C.append(np.sign(A[xx]))

ans = 1
s = 1
flag4 = 0

for i in range(K):
    s *= C[i]

if s < 0:
    p = np.sign(B[K-1])
    flag1 = 0
    for i in range(K-1,-1,-1):
        if C[i] == p*(-1):
            idx1 = i
            flag1 = 1
            break

    flag2 = 0
    for i in range(K,N):
        if C[i] == p*(-1):
            idx2 = i
            flag2 = 1
            break

    flag3 = 0
    if flag1 == 1:
        for i in range(K,N):
            if C[i] == p:
                idx3 = i
                flag3 = 1
                break

    if flag1 and flag2 and flag3:
        if abs(B[K-1])*abs(B[idx3]) <= abs(B[idx1])*abs(B[idx2]):
            B[K-1] = B[idx2]
        else:
            B[idx1] = B[idx3]
    elif flag1 and (not flag2) and flag3:
        B[idx1] = B[idx3]
    elif flag1 and flag2 and (not flag3):
        B[K-1] = B[idx2]
    elif (not flag1) and flag2:
        B[K-1] = B[idx2]
    else:
        flag4 = 1

if flag4:
    for i in range(N-1,N-K-1,-1):
        ans = (ans * (B[i] % mod)) % mod
else:
    for i in range(K):
        ans = (ans * (B[i] % mod)) % mod

print(ans % mod)