P4325

#include<cstdio> 
#include<cmath>
#include<algorithm>
#include<iostream>
using namespace std;
int main(){
        int a[11],b[11],j=0,x;
        for(int i=0;i<10;i++){
            cin>>x;
            b[j++]=x%42;
        }
      sort(b,b+10);
    int sum=unique(b,b+10)-b;
    cout<<sum<<endl;
         return 0;
}