#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define MV 200005
#define LMV 21
#define ff first
#define ss second
#define pb push_back
#define eb emplace_back
#define emp emplace
#define mp make_pair
#define ins insert
#define sz(x) (int)x.size()
#define whoami(args...) { string _s = #args; replace(_s.begin(), _s.end(), ',', ' '); stringstream _ss(_s); istream_iterator<string> _it(_ss); whi(_it, args); }

void whi(istream_iterator<string> it) { cerr<<"\n"; }

template<typename T, typename... Args>
void whi(istream_iterator<string> it, T a, Args... args) { cerr<<*it<<" "<<a<<" "; whi(++it, args...); }

void FLASH() {ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);}
void SETF() {cout.ios_base::setf(ios_base::fixed); cerr.ios_base::setf(ios_base::fixed);}
void UNSETF() {cout.ios_base::unsetf(ios_base::fixed); cerr.ios_base::unsetf(ios_base::fixed);}

typedef long long ll;
typedef long double ld;
typedef vector<int> VI;
typedef vector<ll> VL;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
typedef pair<PII, int> PPII;
typedef pair<PLL, ll> PPLL;
typedef map<int, int> MII;

const int MOD = 1000000007;
const ll INF = 4e18;

template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template <typename T>
using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;

struct h_llint {
  static uint64_t splitmix64(uint64_t x) {    // http://xorshift.di.unimi.it/splitmix64.c
    x += 0x9e3779b97f4a7c15;
    x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
    x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
    return x ^ (x >> 31);
  }
  size_t operator()(uint64_t x) const {
    static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
    return splitmix64(x + FIXED_RANDOM);
  }
};

struct h_pair{
  size_t operator()(const PLL&x)const{
    return hash<ll>()(((ll)x.ff)^(((ll)x.ss)<<32));
  }
};

typedef map<ll, ll> MLL;
typedef map<PII, int> MPII;
typedef map<PLL, ll> MPLL;
typedef set<int> SI;
typedef set<ll> SL;
//ordered_set = order_of_key(.)
//ordered_set = find_by_order(.)
typedef ordered_set<int> OSI;
typedef ordered_set<ll> OSL;
typedef ordered_multiset<int> MOSI;
typedef ordered_multiset<ll> MOSL;
typedef unordered_map<ll, int, h_llint> UMLI;
typedef unordered_map<ll, ll, h_llint> UMLL;
typedef unordered_map<PLL, int, h_pair> UMPI;
typedef unordered_map<PLL, ll, h_pair> UMPL;

int ar[MV];
ll arr[MV];

void solve(int T)
{
	int n,k;
	cin>>n>>k;
	int cn = 0;
	for(int i=1;i<=n;i++)
	{
		cin>>arr[i];
		cn += (arr[i] < 0);
	}	
	sort(arr+1, arr+n+1);
	if((k == n) || ((cn == n) && (k & 1)))
	{
		ll pz = 1;
		for(int i=n;i>=n-k+1;i--)
		pz = ((pz%MOD) * ((MOD + arr[i])%MOD))%MOD;
		cout<<pz<<"\n";
	}
	else
	{
		sort(arr+1, arr+n+1, [](ll A, ll B){ return (abs(A) > abs(B)); });
		// for(int i=1;i<=n;i++)
		// cout<<arr[i]<<" \n"[i == n];	
		cn = 0;
		for(int i=1;i<=k;i++)
		cn += (arr[i] < 0);
		if(!(cn & 1) || (arr[k] == 0))
		{
			ll pz = 1;
			for(int i=1;i<=k;i++)
			pz = ((pz%MOD) * ((MOD + arr[i])%MOD))%MOD;
			cout<<pz<<"\n";	
		}	
		else
		{
			arr[0] = 0;
			int p1 = 0, p2 = 0, n1 = 0, n2 = 0;
			for(int i=k;i>0;i--)
			{
				if(arr[i] >= 0)
				{
					p1 = i;
					break;
				}
			}
			for(int i=k;i>0;i--)
			{
				if(arr[i] < 0)
				{
					n1 = i;
					break;
				}
			}
			for(int i=k+1;i<=n;i++)
			{
				if(arr[i] >= 0)
				{
					p2 = i;
					break;
				}
			}
			for(int i=k+1;i<=n;i++)
			{
				if(arr[i] < 0)
				{
					n2 = i;
					break;
				}
			}
			if((p1 && n2) && ((!p2 || !n1) || ((arr[n1] * arr[n2]) > (arr[p1] * arr[p2]))))
			{
				ll pz = 1;
				for(int i=1;i<=k;i++)
				{
					if(i != p1)
					pz = ((pz%MOD) * ((MOD + arr[i])%MOD))%MOD;
				}
				pz = ((pz%MOD) * ((MOD + arr[n2])%MOD))%MOD;
				cout<<pz<<"\n";
			}
			else
			{
				ll pz = 1;
				for(int i=1;i<=k;i++)
				{
					if(i != n1)
					pz = ((pz%MOD) * ((MOD + arr[i])%MOD))%MOD;
				}
				pz = ((pz%MOD) * ((MOD + arr[p2])%MOD))%MOD;
				cout<<pz<<"\n";	
			}	
		}
	}
	return;	
}

int main(void)
{
	FLASH();
	//freopen("cowjog.in", "r", stdin);
	//freopen("cowjog.out", "w", stdout);
	int T;
	T = 1;

#ifndef ONLINE_JUDGE
	time_t time_t1, time_t2;
	time_t1 = clock();
#endif

	//cin>>T;
	while(T--)
	solve(T);

#ifndef ONLINE_JUDGE
	time_t2 = clock();
	SETF();
	cerr<<"Time taken: "<<setprecision(7)<<(time_t2 - time_t1)/(double)CLOCKS_PER_SEC<<"\n";
	UNSETF();
#endif

	return 0;
}

Measured memory_bytes: 5176