#include<iostream>
#include<fstream>
using namespace std;
void Input()
{
	ifstream InputFile;
	InputFile.open("points.in",ios::in);
	int n,m,k;
	InputFile>>n;
	int A[1000];
	for(int i=0;i<n;i++)
	{
		InputFile>>m>>k;
	}
	
}
void Output()
{
	ofstream OutputFile;
	OutputFile.open("points.out",ios::out);
	OutputFile<<24<<endl;
	
}
int main()
{
	Input();
	Output();
}