#include <bits/stdc++.h>
#include <vector>
#include <iostream>
#include <map>
#include <string>
#include <cmath>
#include <algorithm>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using ll = long long;
using P = pair<int, int>;

int main() {
    
    int count = 0;
    for(int i=1; i<=31; i++) {
        if(i>=10) {
            int P = i%10 + (i%100-i%10)/10;
            if(P == 1) {
                count++;
            }
            else if(P == 3) {
                count++;
            }
            else if(P == 5) {
                count++;
            }
            else if(P == 7) {
                count++;
            }
            else if(P == 8) {
                count++;
            }
            else if(P == 10) {
                count++;
            }
            else if(P == 12) {
                count++;
            }
        }
        else {
            int P = i%10;
            if(P == 1) {
                count++;
            }
            else if(P == 3) {
                count++;
            }
            else if(P == 5) {
                count++;
            }
            else if(P == 7) {
                count++;
            }
            else if(P == 8) {
                count++;
            }
            else if(P == 10) {
                count++;
            }
            else if(P == 12) {
                count++;
            }
        }
    }
    for(int i=1; i<=30; i++) {
        if(i>=10) {
            int P = i%10 + (i%100-i%10)/10;
            if(P == 4) {
                count++;
            }
            else if(P == 6) {
                count++;
            }
            else if(P == 9) {
                count++;
            }
            else if(P == 11) {
                count++;
            }
        }
        else {
            int P = i%10;
            if(P == 4) {
                count++;
            }
            else if(P == 6) {
                count++;
            }
            else if(P == 9) {
                count++;
            }
            else if(P == 11) {
                count++;
            }
        }
    }
    for(int i=1; i<=28; i++) {
        if(i>=10) {
            int P = i%10 + (i%100-i%10)/10;
            if(P == 2) {
                count++;
            }
        }
        else {
            int P = i%10;
            if(P == 2) {
                count++;
            }
        }
    }
    
    cout << count << endl;
    
}