#include <stdio.h> #include using namespace std;

int cowNum(int year);

int main() { int year; cin >> year;

cout << year << " " << cowNum(year) << endl;
system("pause");
return 0;

}

int cowNum(int N) { if (N == 1 || N == 2 || N == 3) { return 1; } else { return cowNum(N - 1) + cowNum(N - 3); } }