#include <iostream>
#include <iomanip>
#include <string>
#include <stack>
#include <vector>
#include <complex>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <iterator>
#include <map>
#include <set>
#include <queue>
#include <list>
#include <regex>
#include <limits>
#include <time.h>
#include <cstdint>
#include <unordered_map>
#include <unordered_set>
#include <bitset>
#include <limits.h>
using namespace std;
using pii  = pair<int,int>;
using ll=long long;
using ld=long double;
#define pb push_back
#define mp make_pair
#define sc second
#define fr first
#define stpr setprecision
#define cYES cout<<"YES"<<endl
#define cNO cout<<"NO"<<endl
#define cYes cout<<"Yes"<<endl
#define cNo cout<<"No"<<endl
#define rep(i,n) for(ll i=0;i<(n);++i)
#define Rep(i,a,b) for(ll i=(a);i<(b);++i)
#define rrep(i,n) for(ll i=n-1;i>=0;i--)
#define rRep(i,a,b) for(ll i=a;i>=b;i--)
#define crep(i) for(char i='a';i<='z';++i)
#define psortsecond(A,N) sort(A,A+N,[](const pii &a, const pii &b){return a.second<b.second;});
#define ALL(x) (x).begin(),(x).end()
#define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl;
#define endl '\n'
int ctoi(const char c){
  if('0' <= c && c <= '9') return (c-'0');
  return -1;
}
ll gcd(ll a,ll b){return (b == 0 ? a : gcd(b, a%b));}
ll lcm(ll a,ll b){return a*b/gcd(a,b);}
constexpr ll MOD=1000000007;
constexpr ll INF=1000000011;
constexpr ll MOD2=998244353;
constexpr ll LINF = 1001002003004005006ll;
constexpr ld EPS=10e-8;
template <class T, class U> inline bool chmax(T& lhs, const U& rhs) { if (lhs < rhs) { lhs = rhs; return 1; } return 0; }
template <class T, class U> inline bool chmin(T& lhs, const U& rhs) { if (lhs > rhs) { lhs = rhs; return 1; } return 0; }
template<typename T> istream& operator>>(istream& is,vector<T>& v){for(auto&& x:v)is >> x;return is;}
template<typename T,typename U> istream& operator>>(istream& is, pair<T,U>& p){ is >> p.first; is >> p.second; return is;}
template<typename T,typename U> ostream& operator>>(ostream& os, const pair<T,U>& p){ os << p.first << ' ' << p.second; return os;}
template<class T> ostream& operator<<(ostream& os, vector<T>& v){
  for(auto i=begin(v); i != end(v); ++i){
    if(i !=begin(v)) os << ' ';
    os << *i;
  }
  return os;
}

template <std::uint_fast64_t Modulus> class modint {
  using u64 = std::uint_fast64_t;

public:
  u64 a;

  constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {}
  constexpr u64 &value() noexcept { return a; }
  constexpr const u64 &value() const noexcept { return a; }
  constexpr modint operator+(const modint rhs) const noexcept {
    return modint(*this) += rhs;
  }
  constexpr modint operator-(const modint rhs) const noexcept {
    return modint(*this) -= rhs;
  }
  constexpr modint operator*(const modint rhs) const noexcept {
    return modint(*this) *= rhs;
  }
  constexpr modint operator/(const modint rhs) const noexcept {
    return modint(*this) /= rhs;
  }
  constexpr modint &operator+=(const modint rhs) noexcept {
    a += rhs.a;
    if (a >= Modulus) {
      a -= Modulus;
    }
    return *this;
  }
  constexpr modint &operator-=(const modint rhs) noexcept {
    if (a < rhs.a) {
      a += Modulus;
    }
    a -= rhs.a;
    return *this;
  }
  constexpr modint &operator*=(const modint rhs) noexcept {
    a = a * rhs.a % Modulus;
    return *this;
  }
  constexpr modint &operator/=(modint rhs) noexcept {
    u64 exp = Modulus - 2;
    while (exp) {
      if (exp % 2) {
        *this *= rhs;
      }
      rhs *= rhs;
      exp /= 2;
    }
    return *this;
  }
};
vector<ll> V1,V2;
queue<ll> V3,V4;
modint<MOD> ANS=1;
ll Z=0;
 
int main(){
  ll N,K;
  cin >> N >> K;
  rep(i,N){
    ll X;
    cin >> X;
    if(X>0){
      V1.pb(X);
    }
    else if(X<0){
      V2.pb(abs(X));
    }
    else{
      Z++;
    }
  }
  sort(ALL(V1));
  reverse(ALL(V1));
  sort(ALL(V2));
  if(V1.size()+V2.size()<K){
    cout << 0 << endl;
    return 0;
  }
  if((V1.size()+V2.size()==K && V2.size()%2==1)){
    if(Z){
      cout << 0 << endl;
      return 0;
    }
  }
  if(K==V1.size()+V2.size()+Z){
    rep(i,V1.size()){
      ANS*=V1[i];
    }
    rep(i,V2.size()){
      ANS*=V2[i];
    }
    if(V2.size()%2==1){
      cout << (-ANS.a+MOD)%MOD << endl;
      return 0;
    }
    else{
      cout << ANS.a << endl;
    }
    return 0;
  }
  if(V1.size()==0){
    if(K%2==1){
      if(Z){
        cout <<0 << endl;
        return 0;
      }
      rep(i,K){
        ANS*=V2[i];
      }
      cout << (-ANS.a+MOD)%MOD << endl;
      return 0;
    }
  }
  reverse(ALL(V2));
  for(ll i=0;i+1<V1.size();i+=2){
    ll X=1;
    X*=V1[i];
    X*=V1[i+1];
    V3.push(X);
  }
  for(ll i=0;i+1<V2.size();i+=2){
    ll X=1;
    X*=V2[i];
    X*=V2[i+1];
    V4.push(X);
  }
  ll X=K/2;
  ll P=0,Q=0;
  rep(i,X){
    ll A=V3.front(),B=V4.front();
    //cout << A << " " << B <<  endl;
    if(A>B){
      ANS*=A%MOD;
      V3.pop();
      P++;
    }
    else{
      ANS*=B%MOD;
      V4.pop();
    }
  }
  if(K%2==1){
    if(P*2<V1.size()){
      ANS*=V1[P*2];
      cout << ANS.a << endl;
      return 0;
    }
    else{
      ANS=1;
      rep(i,V1.size()-1){
        ANS*=V1[i];
        K--;
      }
      rep(j,K/2){
        ANS*=(V2[2*j]*V2[2*j+1]%MOD);
      }
      cout << ANS.a << endl;
      return 0;
    }
  }
  else{
    cout << ANS.a << endl;
  }
}


Measured memory_bytes: 5532