//
//  main.cpp
//  a1
//
//  Created by abc on 9/20/12.
//  Copyright (c) 2012 abc. All rights reserved.
//

# include <iostream>
# include <cstdio>
# include <cstdlib>
# include <iomanip>
# include <cmath>
# include <map>

using namespace std;

typedef long double LONG;

int main(int argc, const char * argv[])
{
    cout << 4;
    return 0;
}