#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <string.h>
using namespace std;
int main()
{
int i,j,a[13]={0},to=0,mi=0;
char s[13][10]={"1m","9m","1p","9p","1s","9s","1z","2z","3z","4z","5z","6z","7z"},ci[10];
for(i=0;i<13;i++)
{
cin>>ci;
for(j=0;j<13;j++)
if(strcmp(ci,s[j])==0)
a[j]++;
}
for(i=0;i<=12;i++)
{
to+=a[i];
if(a[i]>=1)mi++;
}
if(to<13||mi<=11)cout<<0<<endl;
else if(mi==13)cout<<13<<endl;
else cout<<1<<endl;
return 0;
}