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

int main() {
  int ans = 0;
  
  for(int i = 1; i < 13; i++){
    for(int j = 1; j < 32; j++){
      if(i == 4 && j == 31) continue;
      int k = j, sum = 0;
      while(k > 0){
        sum += k % 10;
        k /= 10;
      }
      if(sum == i) ans++;
    }
  }
  
  cout << ans << endl;
}