#include <iostream>
#include <fstream>
using namespace std;
ifstream f("date.in");
ofstream g("date.out");
int main()
{
    int n,a,b,c;
    f>>n;
    f>>a>>b>>c;
    switch(n)
    {
        case 1:g<<a;break;
        case 2:g<<b;break;
        case 3:g<<c;break;
    }
    f.close();
    g.close();
    return 0;
}