bool DBG = false;
//#pragma GCC optimize("Ofast")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
//#include <boost/multiprecision/cpp_dec_float.hpp>
//#include <boost/multiprecision/cpp_int.hpp>
using namespace std;
using ll = long long;
using ld = long double;
//using i128 = __int128_t;
//using bint = boost::multiprecision::cpp_int;
//using d1024 = boost::multiprecision::number<mp::cpp_dec_float<1024>>;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define IFOR(i,a,b) for(int i=((b)-1);i>=(a);--i)
#define RPT(i,a,b) for(int i=(a);i<((a)+(b));++i)
#define IRPT(i,a,b) for(int i=((a)+(b)-1);i>=(a);--i)
#define ALL(x) x.begin(),x.end()
#define RALL(x) x.rbegin(),x.rend()
#define fs first
#define sd second
#define couts(x) cout << (x) << (" ")
#define coutn(x) cout << (x) << ("\n")
//#define ncouts(x) numout(x),outst[outst_N++] = ' '
//#define ncoutn(x) numout(x),outst[outst_N++] = '\n'
//#define scouts(x) strout(x),outst[outst_N++] = ' '
//#define scoutn(x) strout(x),outst[outst_N++] = '\n'
#define dcouts(x) if(DBG) couts(x)
#define dcoutn(x) if(DBG) coutn(x)
#define endl "\n"
#define psb push_back
#define ppb pop_back
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define LBIT(x,a) (((x)>>(a))&1LL)
#define IBIT(x,a) (((x)>>(a))&1)
#define BCOUNT(x) (__builtin_popcount(x))
#define sorta(x) sort(ALL(x))
#define sortra(x) sort(RALL(x))
#define revall(x) reverse(ALL(x))
template<typename T> std::istream &operator>>(std::istream &is, std::vector<T> &vec){ for (auto &v : vec) is >> v; return is; }
template<typename T1, typename T2> std::istream &operator>>(std::istream &is, std::pair<T1,T2> &p){is >> p.first >> p.second; return is; }
template<typename T> std::ostream &operator<<(std::ostream &os, const std::vector<T> &vec){ os << "["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> std::ostream &operator<<(std::ostream &os, const std::deque<T> &vec){ os << "deque["; for (auto v : vec) os << v << ","; os << "]"; return os; }
template<typename T> std::ostream &operator<<(std::ostream &os, const std::set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> std::ostream &operator<<(std::ostream &os, const std::unordered_set<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> std::ostream &operator<<(std::ostream &os, const std::multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T> std::ostream &operator<<(std::ostream &os, const std::unordered_multiset<T> &vec){ os << "{"; for (auto v : vec) os << v << ","; os << "}"; return os; }
template<typename T1, typename T2> std::ostream &operator<<(std::ostream &os, const std::pair<T1, T2> &pa){ os << "(" << pa.first << "," << pa.second << ")"; return os; }
template<typename TK, typename TV> std::ostream &operator<<(std::ostream &os, const std::map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
template<typename TK, typename TV> std::ostream &operator<<(std::ostream &os, const std::unordered_map<TK, TV> &mp){ os << "{"; for (auto v : mp) os << v.first << "=>" << v.second << ","; os << "}"; return os; }
/*
std::ostream &operator<<(std::ostream &os, const i128 nu){
  i128 co = nu;
  if(co==0){cout << '0';}
  else{
    string ous; if(co<0){cout<<'-'; co*=-1;}
    while(co){
      ous += (co%10)+'0';
      co /= 10;
    }
    reverse(ALL(ous));
    cout<<ous;
  }
  return os;
}
std::istream &operator>>(std::istream &is, i128 &nu){ string cs; cin >> cs; nu=0;int mn=1; for(auto &x:cs) { if(x!='-'){nu*=10;nu+=(x-'0');} else mn *= -1;} nu *= mn;  return is; }

*/


template<class T> using V = vector<T>;
template<class T> using V2 = V<V<T>>;
template<class T> using V3 = V<V2<T>>;
template<class T> using V4 = V<V3<T>>;


constexpr ll LINF = 1LL << 60;
constexpr int IINF = 1 << 28;
constexpr ll mod =  1'000'000'007;
//constexpr ll mod = 998244353;


ll modpow(ll a, ll n, ll m=mod) {
	ll res = 1;
	while (n) {
		if (n & 1)res = res * a % m;
		a = a * a%m; n >>= 1;
	}
	return res;
}

void solve5(){
  int n, k; cin >> n >> k;
  V<ll> pos, neg; ll zeros = 0;
  FOR(i,0,n){
    ll ai; cin >> ai;
    if(ai>0) pos.psb(ai);
    else if(ai<0) neg.psb(ai);
    else ++zeros;
  }
  sortra(pos); sorta(neg);
  if(n-zeros<k) {cout<<0; return;}
  int cur = -10;
  FOR(i,0,n+10){
    if(2*i>(int)neg.size() ) break;
    if(2*i+(int)pos.size()<k) continue;
    if(cur==-10){ if(k-2*i>=0)cur = k-2*i; continue;}
    if(cur>-10 &&  cur<2) break;
    if(cur>1 && 2*i-2>=0 && 2*i-1<neg.size() && pos[cur-2]*pos[cur-1]<neg[2*i-1]*neg[2*i-2]) cur -= 2;
    else break;
  }
  if(cur==-10) {
    if(zeros){
      cout << 0;
      return;
    }
    else{
      sortra(neg); sorta(pos);
      FOR(i,0,n+10){
    	if(2*i+1>(int)neg.size() ) break;
    	if(2*i+1+(int)pos.size()<k) continue;
    	if(cur==-10){ if(k-2*i-1>=0)cur = k-2*i-1; continue;}
    	if(cur>-10 &&  cur<2) break;
    	if(cur>1 && 2*i-1>=0 && 2*i-0<neg.size() && pos[cur-2]*pos[cur-1]>neg[2*i-1]*neg[2*i-0]) cur -= 2;
    	else break;
  	  }
      ll ans = 1;
      FOR(i,0,cur) (ans *= pos[i]) %= mod;
      FOR(i,0,k-cur) (ans *= -neg[i]) %= mod;
      ans *= -1;
      (ans += 2*mod) %= mod;
      cout << ans;
      
    }
  }
  else if( (k-cur)%2==0){
    //coutn(pos); coutn(neg);
    ll ans = 1;
    FOR(i,0,cur) (ans *= pos[i]) %= mod;
    FOR(i,0,k-cur) (ans *= -neg[i]) %= mod;
    //coutn(cur);
    cout << ans;
  }
  
}

void solve6(){
}

void solve(){
  solve5();
}



int main(void){
  //std::cout << std::fixed << std::setprecision(20);
  cin.tie(0);
  //ios::sync_with_stdio(false);
  solve();
  //printf("%s", outst);
  return 0;
}



Measured memory_bytes: 5524