#include <bits/stdc++.h>
using namespace std;
/*
multiplying 3 numbers from an array to get highest product possible

*/
int func(vector<int> vect){
  int min1= INT_MAX, min2=min1;
  int max1= INT_MIN, max2= INT_MIN, max3= INT_MIN;
  for(int i=0; i<vect.size(); i++){
    if(vect[i] >= max1){
      max3= max2;
      max2= max1;
      max1= vect[i];
    }
    else if(vect[i] >= max2){
      max3= max2;
      max2= vect[i];
    }
    else if(vect[i] >= max3)
      max3= vect[i];
    if(vect[i] <= min1){
      min2= min1;
      min1= vect[i];
    }
    else if(vect[i] <= min2)
      min2= vect[i];
  }
  return max(max1*max2*max3, min1*min2*max1);

}


int main(){
  vector<int> vect= {1,3,4,-10,-10,10};
 cout<<func(vect);
  return 0;
}