#include <bits/stdc++.h>
 
//    #include <boost/multiprecision/cpp_int.hpp>
 #define int long long
 #define inf  1000000007
// #define inf  998244353

 #define pa pair<int,int>
 #define ll long long
 #define pal pair<double,double>
 #define ppap pair<pa,int>
  #define PI 3.14159265358979323846
  #define paa pair<int,char>
  #define  mp make_pair
  #define  pb push_back
  #define EPS (1e-8)
                                          
    int dx[8]={0,1,0,-1,1,1,-1,-1};
    int dy[8]={1,0,-1,0,-1,1,1,-1};
                                            using namespace std;
                                   			class pa3{
                                            	public:
                                            	int x;
                                   				int y,z;
                                            	pa3(int x=0,int y=0,int z=0):x(x),y(y),z(z) {}
                                            	bool operator < (const pa3 &p) const{
                                            		if(x!=p.x) return x<p.x;
                                            		if(y!=p.y) return y<p.y;
                                            		 return z<p.z;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                   				bool operator > (const pa3 &p) const{
                                            		if(x!=p.x) return x>p.x;
                                            		if(y!=p.y) return y>p.y;
                                            		 return z>p.z;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa3 &p) const{
                                            		return x==p.x && y==p.y && z==p.z;
                                            	}
                                            		bool operator != (const pa3 &p) const{
                                            			return !( x==p.x && y==p.y && z==p.z);
                                            	}
                                            
                                            };
                                            
                                            class pa4{
                                            	public:
                                            	int x;
                                            	int y,z,w;
                                            	pa4(int x=0,int y=0,int z=0,int w=0):x(x),y(y),z(z),w(w) {}
                                            	bool operator < (const pa4 &p) const{
                                            		if(x!=p.x) return x<p.x;
                                            		if(y!=p.y) return y<p.y;
                                            		if(z!=p.z)return z<p.z;
                                            		return w<p.w;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator > (const pa4 &p) const{
                                            		if(x!=p.x) return x>p.x;
                                            		if(y!=p.y) return y>p.y;
                                            		if(z!=p.z)return z>p.z;
                                            		return w>p.w;
                                            		//return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa4 &p) const{
                                            		return x==p.x && y==p.y && z==p.z &&w==p.w;
                                            	}
                                            		
                                            
                                            };
                                            class pa2{
                                            	public:
                                            	int x,y;
                                            	pa2(int x=0,int y=0):x(x),y(y) {}
                                            	pa2 operator + (pa2 p) {return pa2(x+p.x,y+p.y);}
                                            	pa2 operator - (pa2 p) {return pa2(x-p.x,y-p.y);}
                                            	bool operator < (const pa2 &p) const{
                                            		return y != p.y ? y<p.y: x<p.x;
                                            	}
                                            	bool operator > (const pa2 &p) const{
                                            		return x != p.x ? x<p.x: y<p.y;
                                            	}
                                            	bool operator == (const pa2 &p) const{
                                            		return abs(x-p.x)==0 && abs(y-p.y)==0;
                                            	}
                                            	bool operator != (const pa2 &p) const{
                                            		return !(abs(x-p.x)==0 && abs(y-p.y)==0);
                                            	}
                                            		
                                            
                                            };
                                            
 
                      
                                string itos( int i ) {
                                ostringstream s ;
                                s << i ;
                                return s.str() ;
                                }
                                 
                                int Gcd(int v,int b){
                                	if(v==0) return b;
                                	if(b==0) return v;
                                	if(v>b) return Gcd(b,v);
                                	if(v==b) return b;
                                	if(b%v==0) return v;
                                	return Gcd(v,b%v);
                                }
                 
                            
                                int mod;
int extgcd(int a, int b, int &x, int &y) {
    if (b == 0) {
        x = 1;
        y = 0;
        return a;
    }
    int d = extgcd(b, a%b, y, x);
    y -= a/b * x;
    return d;
}
pa operator+(const pa & l,const pa & r) {   
    return {l.first+r.first,l.second+r.second};                                    
}    
pa operator-(const pa & l,const pa & r) {   
    return {l.first-r.first,l.second-r.second};                                    
}  
                int beki(int wa,int rr,int warukazu){
                	if(rr==0) return 1%warukazu;
                	if(rr==1) return wa%warukazu;
                	wa%=warukazu;
                	if(rr%2==1) return ((ll)beki(wa,rr-1,warukazu)*(ll)wa)%warukazu;
                	ll zx=beki(wa,rr/2,warukazu);
                	return (zx*zx)%warukazu;
                }
 
                              
                int pr[10];
                int inv[10];
                

                
    			int comb(int nn,int rr){
    				if(rr<0 || rr>nn || nn<0) return 0;
    				int r=pr[nn]*inv[rr];
    				r%=mod;
    				r*=inv[nn-rr];
    				r%=mod;
    				return r;
    			}
               
                void gya(int ert){
                	pr[0]=1;
                	for(int i=1;i<=ert;i++){
                		pr[i]=((ll)pr[i-1]*i)%mod;
                	}
                		inv[ert]=beki(pr[ert],mod-2,mod);
                	for(int i=ert-1;i>=0;i--){
                		inv[i]=(ll)inv[i+1]*(i+1)%mod;
                	}
                }
                
              //   cin.tie(0);
    		//	ios::sync_with_stdio(false);
    			//priority_queue<pa3,vector<pa3>,greater<pa3>> pq;            
                 //sort(ve.begin(),ve.end(),greater<int>());
 //   mt19937(clock_per_sec);
  //  mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()) ;




signed main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
vector<int> ve[2];
	int p=0,d=0;
	int z=0;
	int n,k;
	cin>>n>>k;
	for(int i=0;i<n;i++){
		int y;
		cin>>y;
		if(y==0)z++;
		else if(y>0){
			p++;
			ve[0].pb(y);
		}
		else if(y<0){
			d++;
			ve[1].pb(-y);
		}
		
	}
	
	if(p+d<k){
		cout<<0<<endl;
		return 0;
	}
	
	
	bool seiok=0;
	for(int i=0;i<=d;i+=2)if(p>=k-i && k-i>=0)seiok=1;
//	cout<<seiok<<endl;
	if(!seiok){
		//cout<<"d"<<endl;
		if(z>0){
			cout<<0<<endl;
		}
		else{
		int ans=1;
			sort(ve[1].begin(),ve[1].end());
			int f=0;
		for(auto v:ve[1]){
			f++;
			
			ans*=inf-v;
			ans%=inf;
		//	cout<<ans<<endl;
			if(f==k)break;
		}
		for(auto v:ve[0]){
			
			
			ans*=v;
			ans%=inf;
		//	cout<<ans<<endl;
		}
			
		cout<<ans<<endl;
		}
		return 0;
	}
	
	
	vector<pa> W;
	for(auto v:ve[0])W.pb(mp(v,0));
	for( auto v:ve[1])W.pb(mp(v,1));
	
	sort(W.begin(),W.end(),greater<pa>());
	
	int ne=0;
	int lasn=-1,lasp=-1;
	int aton=-1,atop=-1;
	for(int i=0;i<k;i++){
		if(W[i].second)ne++,lasn=i;
		if(W[i].second==0)lasp=i;
	}
	
	if(ne%2==0){
		int ans=1;
		for(int i=0;i<k;i++){
			ans*=W[i].first;
			ans%=inf;
		}
		cout<<ans<<endl;
		return 0;
	}
	
	int ima=1;
		for(int i=0;i<k;i++){
			ima*=W[i].first;
			ima%=inf;
		}
	
	
	for(int i=k;i<W.size();i++){
		if(W[i].second){
			if(aton==-1)aton=i;
		}
		else{
			if(atop==-1)atop=i;
		}
	}
//	int k1=-1,k2=-1;
	int sh=-1;
	if(lasn==-1|| atop==-1){
		sh=1;
	}
	else if(lasp==-1|| aton==-1){
		sh=0;
	}
	else if(W[atop].first*W[lasp].first>W[aton].first*W[lasn].first){
		sh=0;
	}
	else sh=1;
//	cout<<lasn<<" "<<atop<<endl;
	if(sh==0){
		ima*=beki(W[lasn].first,inf-2,inf);
		ima%=inf;
		ima*=W[atop].first;
		ima%=inf;
	}
	if(sh==1){
		ima*=beki(W[lasp].first,inf-2,inf);
		ima%=inf;
		ima*=W[aton].first;
		ima%=inf;
	}
	
	cout<<ima<<endl;
	
	return 0;
 }



Measured memory_bytes: 10588