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

int main(){
	int month = 12;
	int count = 0;

	for (int i=1; i<=month; ++i) {
		for (int j=0; j<=3; ++j) {

			if (j==3) {
				for (int k=0; k<=1; ++k) {
					if (i = j + k) {
						++count;
					}
					goto label;
				}
			}

			for (int k=0; k<=9; ++k) {
				if (i = j + k) {
					++count;
				}
			}
		}
	}
	label:
		--count;

	cout << count << "\n";
}