#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
 int n;
    string s;
    cin>>n;
    cin>>s;
    int d=1,sp=1,l=1,u=1;
    string p="!@#$%^&*()-+";
    for(int i=0;i<s.length();i++)
    {
        //int c=s[i];
       // cout<<s[i];
        if(s[i]>='0'&&s[i]<='9') d=0;
        
        else if(s[i]>='A'&&s[i]<='Z') u=0;
        else if(s[i]>='a'&&s[i]<='z') l=0;
        else {
            for(int j=0;j<p.length();j++)
            {
                if(s[i]==p[j]){sp=0; break;}
            }
        }
        //cout<<u;
    }
    //cout<<d<<" "<<l<<" "<<u<<" "<<sp<<" ";
    int sum=d+sp+l+u;
    if(n+sum>=6) cout<<sum;
    else cout<<6-n;
    return 0;
}