#include <bits/stdc++.h> using namespace std; int main(){ int sum=0; for(int i=0;i<=36;i++){ int a=0,b=0,c=0; if(i<=9){ a=1; } if(i%2==0&&i<=18){ b=1; } if(i%4==0){ c=1; } if(a==1||b==1||c==1){ //cout<<i<<" "<<sum<<endl; sum++; } } cout<<sum; }