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

int main() {
	// your code goes here
	
	vector<int> a={2,2,3,1};
	
	vector<int> b={3,2,1,4};
	
	sort(a.begin(), a.end());
	sort(b.begin(), b.end(), greater<int>());
	int sum=0;
	for(int i=0; i<a.size(); i++){
		sum+= a[i]*b[i];
	}
	
	cout<< sum;
	return 0;
}