#include <iostream>
using namespace std;

int main() {
	// your code goes here
	int count = 0,num = 0;
	int i,j;
	for(i=1;i<13;i++){
		for(j=1;j<31;j++){
			num = 0;
			num+=10/j;
			num+=10%j;
			if(num == i) count++;
		}
		if(i==2||i==4||i==6||i==9||i==11){
			num = 0;
			num+=10/j;
			num+=10%j;
			if(num == i) count++;
		}
	}
	cout <<count <<endl; 
	return 0;
}