#define _USE_MATH_DEFINES	//M_PI(π),M_SQRT2(√2)
#include <iostream>			//std::cout, std::cin
#include <string>			//std::string
#include <vector>			//std::vector
#include <valarray>			//std::valarray
#include <algorithm>		//std::sort
#include <time.h>			//localtime_s
#include <cstdlib>			//abs
#include <cmath>			//abs,std::pow,sqrt,sin,cos,round,floor,ceil
#include <fstream>			//std::ifstream
#include <iomanip>			//std::setprecision
#include <random>			//std::random(C++11)
#include <numeric>			//std::accumulate

int main(void) {

	//test用
	//std::ifstream in("test.txt");
	//std::cin.rdbuf(in.rdbuf());

	//const unsigned int MODULO = 1000000007;	//MODULO 10^9+7用

	int ans = 0;
	int A[7] = { 1,3,5,7,8,10,12 };
	int B[4] = { 4,6,9,11 };
	
	for (int i = 0; i < 7; i++) {
		for (int j = 1; j <= 31; j++) {
			if (A[i] == j / 10 + j % 10) {
				ans++;
			}
		}
	}
	for (int i = 0; i < 4; i++) {
		for (int j = 1; j <= 30; j++) {
			if (B[i] == j / 10 + j % 10) {
				ans++;
			}
		}
	}
	for (int j = 0; j < 28; j++) {
		if (2 == j / 10 + j % 10) {
			ans++;
		}
	}

	std::cout << ans << std::endl;
}