/**
 *    author:  otera    
**/
#include<iostream>
#include<string> 
#include<cstdio>
#include<cstring>
#include<vector>
#include<cmath>
#include<algorithm> 
#include<functional>
#include<iomanip>
#include<queue>
#include<deque>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<cassert>
using namespace std;

#define int long long
typedef long long ll;
typedef unsigned long long ul;
typedef unsigned int ui;
typedef long double ld;
const int inf=1e9+7;
const ll INF=1LL<<60 ;
const ll mod=1e9+7 ;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef complex<ld> Point;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<int, int> P;
typedef pair<ld, ld> LDP;
typedef pair<ll, ll> LP;
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define pb push_back
#define debug(x)  cerr << #x << " = " << (x) << endl;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

// modint: mod 計算を int を扱うように扱える構造体
template<int MOD> struct Fp {
    long long val;
    constexpr Fp(long long v = 0) noexcept : val(v % MOD) {
        if (val < 0) val += MOD;
    }
    constexpr int getmod() { return MOD; }
    constexpr Fp operator - () const noexcept {
        return val ? MOD - val : 0;
    }
    constexpr Fp operator + (const Fp& r) const noexcept { return Fp(*this) += r; }
    constexpr Fp operator - (const Fp& r) const noexcept { return Fp(*this) -= r; }
    constexpr Fp operator * (const Fp& r) const noexcept { return Fp(*this) *= r; }
    constexpr Fp operator / (const Fp& r) const noexcept { return Fp(*this) /= r; }
    constexpr Fp& operator += (const Fp& r) noexcept {
        val += r.val;
        if (val >= MOD) val -= MOD;
        return *this;
    }
    constexpr Fp& operator -= (const Fp& r) noexcept {
        val -= r.val;
        if (val < 0) val += MOD;
        return *this;
    }
    constexpr Fp& operator *= (const Fp& r) noexcept {
        val = val * r.val % MOD;
        return *this;
    }
    constexpr Fp& operator /= (const Fp& r) noexcept {
        long long a = r.val, b = MOD, u = 1, v = 0;
        while (b) {
            long long t = a / b;
            a -= t * b; swap(a, b);
            u -= t * v; swap(u, v);
        }
        val = val * u % MOD;
        if (val < 0) val += MOD;
        return *this;
    }
    constexpr bool operator == (const Fp& r) const noexcept {
        return this->val == r.val;
    }
    constexpr bool operator != (const Fp& r) const noexcept {
        return this->val != r.val;
    }
    friend constexpr ostream& operator << (ostream &os, const Fp<MOD>& x) noexcept {
        return os << x.val;
    }
    friend constexpr istream& operator >> (istream &is, Fp<MOD>& x) noexcept {
        return is >> x.val;
    }
    friend constexpr Fp<MOD> modpow(const Fp<MOD> &a, long long n) noexcept {
        if (n == 0) return 1;
        auto t = modpow(a, n / 2);
        t = t * t;
        if (n & 1) t = t * a;
        return t;
    }
};

// 二項係数ライブラリ
template<class T> struct BiCoef {
    vector<T> fact_, inv_, finv_;
    constexpr BiCoef() {}
    constexpr BiCoef(int n) noexcept : fact_(n, 1), inv_(n, 1), finv_(n, 1) {
        init(n);
    }
    constexpr void init(int n) noexcept {
        fact_.assign(n, 1), inv_.assign(n, 1), finv_.assign(n, 1);
        int MOD = fact_[0].getmod();
        for(int i = 2; i < n; i++){
            fact_[i] = fact_[i-1] * i;
            inv_[i] = -inv_[MOD%i] * (MOD/i);
            finv_[i] = finv_[i-1] * inv_[i];
        }
    }
    constexpr T com(int n, int k) const noexcept {
        if (n < k || n < 0 || k < 0) return 0;
        return fact_[n] * finv_[k] * finv_[n-k];
    }
    constexpr T fact(int n) const noexcept {
        if (n < 0) return 0;
        return fact_[n];
    }
    constexpr T inv(int n) const noexcept {
        if (n < 0) return 0;
        return inv_[n];
    }
    constexpr T finv(int n) const noexcept {
        if (n < 0) return 0;
        return finv_[n];
    }
};

const int MOD = 1000000007;
//const int MOD = 998244353;
using mint = Fp<MOD>;
BiCoef<mint> bc;

void solve() {
	int n, k; cin >> n >> k;
    vector<int> a(n);
    int cnt0 = 0, cntm = 0, cntp = 0;
    vector<int> pl, mi;
    rep(i, n) {
        cin >> a[i];
        if(a[i] == 0) ++ cnt0;
        else if(a[i] < 0) {
            ++ cntm;
            mi.pb(a[i]);
        }
        else {
            ++ cntp;
            pl.pb(a[i]);
        }
    }
    if(cnt0 > n - k) {
        cout << 0 << endl;
        return;
    }
    if(cntp == 0) {
        if(k % 2 == 1) {
            if(cnt0 > 0) {
                cout << 0 << endl;
            } else {
                sort(all(mi));
                reverse(all(mi));
                mint ans = 1;
                rep(i, k) {
                    ans *= (mint)mi[i];
                }
                cout << ans << endl;
            }
        } else {
            sort(all(mi));
            mint ans = 1;
            rep(i, k) {
                ans *= (mint)mi[i];
            }
            cout << ans << endl;
        }
        return;
    }
    vector<P> vec;
    for(int x: mi) {
        vec.pb(P{abs(x), 0});
    }
    for(int x: pl) {
        vec.pb(P{x, 1});
    }
    sort(all(vec));
    reverse(all(vec));
    int cntmi = 0;
    mint ans = 1;
    int bfmi = -1, bfpl = -1;
    rep(i, k) {
        ans *= (mint)vec[i].fr;
        if(vec[i].sc == 0) {
            //mi
            ++ cntmi;
            bfmi = vec[i].fr;
        } else {
            //pl
            bfpl = vec[i].fr;
        }
    }
    if(cntmi % 2 == 0) {
        cout << ans << endl;
    } else {
        int nxtmi = -1, nxtpl = -1;
        for(int i = k; i < (int)vec.size(); ++ i) {
            if(vec[i].sc == 0 && nxtmi == -1) {
                nxtmi = vec[i].fr;
            }
            if(vec[i].sc == 1 && nxtpl == -1) {
                nxtpl = vec[i].fr;
            }
        }
        ld res = -1;
        mint tmp = (mint)(-1);
        if(bfpl != -1 && nxtmi != -1) {
            if(chmax(res, (ld)(nxtmi) * (ld)1000000 / (ld)(bfpl)) ) {
                tmp = (mint)nxtmi / (mint)bfpl;
            }
        }
        if(bfmi != -1 && nxtpl != -1) {
            if(chmax(res, (ld)(nxtpl) * (ld)1000000 / (ld)(bfmi)) ) {
                 tmp = (mint)nxtpl / (mint)bfmi;
            }
        }
        cout << ans * tmp << endl;
    }
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	//cout << fixed << setprecision(10);
	//int t; cin >> t; rep(i, t)solve();
	solve();
    return 0;
}

Measured memory_bytes: 12024