#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;
typedef vector<vector<vector<ll>>> vvvll;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;
typedef vector<vector<vector<bool>>> vvvb;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef vector<vpll> vvpll;
typedef vector<double> vd;
typedef vector<vd> vdd;

#define FOR(i,x,y) for(ll i=(ll)x; i<(ll)y; ++i)
#define REP(i,y) FOR(i, 0, y)
#define RFOR(i,x,y) for(ll i=(ll)x; i>=(ll)y; --i)
#define RREP(i,x) RFOR(i, x, 0)
#define ALL(a) a.begin(), a.end()
#define pb push_back
#define debug_print(x...) cerr << "line " << __LINE__ << " : "; debug_print_in(x);

template <typename First>
void debug_print_in(First first){
  cerr << first << endl;
  return;
}

template <typename First, typename... Rest>
void debug_print_in(First first, Rest... rest){
  cerr << first << " ";
  debug_print_in(rest...);
  return;
}

void IN(void){
  return;
}

template <typename First, typename... Rest>
void IN(First& first, Rest&... rest){
  cin >> first;
  IN(rest...);
  return;
}

template <typename First>
void OUT(First first){
  cout << first << endl;
  return;
}

template <typename First, typename... Rest>
void OUT(First first, Rest... rest){
  cout << first << " ";
  OUT(rest...);
  return;
}

template<class t, class u> void chmax(t&a,u b){if(a<b)a=b;};
template<class t, class u> void chmin(t&a,u b){if(a>b)a=b;};
int popcount(int t){return __builtin_popcount(t);} //GCC
int popcount(ll t){return __builtin_popcountll(t);} //GCC

template <typename T>
void vec_print(vector<T> VEC){
  REP(i, VEC.size()){
    cerr << VEC[i] << " ";
  }
  cerr << endl;
};

template <typename T>
void mat_print(vector<vector<T> > MAT){
  REP(i,MAT.size()){
    REP(j,MAT[i].size()){
      cerr << MAT[i][j] << " ";
    }
    cerr << endl;
  }
};

constexpr int INF = (1<<30);
constexpr ll INFLL = 1LL<<62;
constexpr long double EPS = 1e-12;
constexpr ll MOD = (ll)((1E+9)+7);

int main(){
  cin.tie(0); // cut the cin and cout (default, std::flush is performed after std::cin)
  ios::sync_with_stdio(false); // cut the iostream and stdio (DON'T endl; BUT "\n";)
  
  ll N, K;
  IN(N, K);
  vll Ap;
  vll Am;
  REP(i,N){
    ll A;
    IN(A);
    if(A>0){
      Ap.pb(A);
    }else{
      Am.pb(A);
    }
  }
  sort(ALL(Ap));
  reverse(ALL(Ap));
  sort(ALL(Am));

  if(N==K){
    ll ans = 1;
    REP(i,Ap.size()){
      ans *= Ap[i];
      ans %= MOD;
    }
    REP(i,Am.size()){
      ans *= (MOD+Am[i]);
      ans %= MOD;
    }
    OUT(ans);
    return 0;
  }

  if(Ap.size()==0){
    REP(i,Am.size()){
      Ap.pb(-Am[i]);
    }
    sort(ALL(Ap));
    if(K%2==0){
      reverse(ALL(Ap));
    }
    ll ans = 1;
    REP(i,K){
      ans *= Ap[i];
      ans %= MOD;
    }
    if(K%2==0){
      OUT(ans%MOD);
    }else{
      OUT((MOD-ans)%MOD);
    }
    return 0;
  }

  ll pos_p = min(K, (ll)Ap.size());
  ll pos_m = K-pos_p;

  if(pos_m%2==1){
    pos_m++;
    pos_p--;
  }

  while(true){
    if(pos_m+1>=Am.size()) break;
    if(pos_p-2<0) break;
    if(Am[pos_m]*Am[pos_m+1] > Ap[pos_p-1] * Ap[pos_p-2]){
      pos_m+=2;
      pos_p-=2;
    }else{
      break;
    }
  }

  /*
  vec_print(Ap);
  vec_print(Am);
  debug_print(pos_p);
  debug_print(pos_m);
  */

  ll ans = 1;
  REP(i,pos_p){
    ans *= Ap[i];
    ans %= MOD;
  }
  REP(i,pos_m){
    ans *= (MOD+Am[i]);
    ans %= MOD;
  }
  OUT(ans%MOD);

  return 0;
}

Measured memory_bytes: 7840