#include <bits/stdc++.h>
using namespace std;
#define reps(i,s,n) for(int i = s; i < n; i++)
#define rep(i,n) reps(i,0,n)
#define Rreps(i,n,e) for(int i = n - 1; i >= e; --i)
#define Rrep(i,n) Rreps(i,n,0)
#define ALL(a) a.begin(), a.end()
#define fi first
#define se second
typedef long long ll;
typedef vector<ll> vec;
typedef vector<vec> mat;

ll N,M,H,W,Q,K,A,B;
string S;
//const ll MOD = 998244353;
const ll MOD = (1e+9) + 7;
typedef pair<ll, ll> P;
const ll INF = (1LL<<58);

class mint{
public:
    ll x;
    static unsigned long long mod;
    static unsigned long long mod_plus;
    mint(){x = 0;}
    mint(ll _x) : x((_x < 0 ? ((_x += mod_plus) < 0 ? _x + mod_plus : _x) : _x)%mod){}
    /*mint& operator=(const ll &a){
        x = a;
        return *this;
    }*/

    mint operator-(){
        return x == 0 ? 0 : mod - x;
    }
    mint& operator+=(const mint& a){
        if((x += a.x) >= mod) x -= mod;
        return *this;
    }
    mint operator+(const mint& a) const{
        mint res(*this);
        return res += a;
    }
    mint& operator-=(const mint& a){
        if((x -= a.x) < 0) x += mod;
        return *this;
    }
    mint operator-(const mint& a) const{
        mint res(*this);
        return res -= a;
    }
    mint& operator*=(const mint& a){
        (x *= a.x)%=mod;
        return *this;
    }
    /*mint& operator*=(const ll& a){
        mint temp(a);
        return *this *= temp;
    }*/
    mint operator*(const mint& a) const{
        mint res(*this);
        return res *= a;
    }
    /*mint operator*(const ll& a) const{
        mint res(*this);
        return res *= a;
    }*/
    mint pow(unsigned long long pw) const{
        mint res(1), comp(*this);
        while(pw){
            if(pw&1) res *= comp;
            comp *= comp;
            pw >>= 1;
        }
        return res;
    }
    //以下、modが素数のときのみ
    mint inv() const{
        mint res(*this);
        return res.pow(mod - 2);
    }
    mint& operator/=(const mint &a){
        (x *= a.inv().x)%=mod;
        return *this;
    }
    mint operator/(const mint &a) const{
        mint res(*this);
        return res /= a;
    }
};
ostream& operator<<(ostream& os, const mint& a){
    os << a.x;
    return os;
}
unsigned long long mint::mod = int(1e+9) + 7;
unsigned long long mint::mod_plus = (LLONG_MAX / mint::mod) * mint::mod;
typedef vector<mint> vm;


int main() {
    cin>>N>>K;
    vec a(0), b(0);
    rep(i,N){
        cin>>A;
        if(A != 0) (A > 0 ? a.push_back(A) : b.push_back(-A));
    }
    sort(ALL(a));
    sort(ALL(b));
    reverse(ALL(a));
    reverse(ALL(b));
    ll as = a.size(), bs = b.size();
    if(a.size() + b.size() < K){
        cout<<0<<endl;
    }else if((as == 0 && (K&1)) || (as + bs == K && (bs&1))) {
        if(as + bs != N){
            cout<<0<<endl;
        }else{
            mint res(1);
            Rreps(i, bs, bs - min(bs, K)) {
                res *= b[i];
            }
            rep(i, as) res *= a[i];
            res = -res;
            cout<<res<<endl;
        }
    }else{
        vec can(0);
        rep(i, bs / 2 + 1)  if(K - i * 2 <= as && K - i * 2 >= 0) can.push_back(i * 2);
        int last = can[0];
        for(ll num : can){
            if(num == last) continue;
            int anum = K - num;
            if(b[num - 1] * b[num - 2] > a[anum] * a[anum + 1]) last = num;
        }
        mint res(1);
        rep(i, last) res *= b[i];
        rep(i, K - last) res *= a[i];
        cout<<res<<endl;
    }
}


Measured memory_bytes: 5508