#include<bits/stdc++.h>

using namespace std;

int main()
{
    int n, q=1, w=1, e=1, r=1, hasil=0;
    string a;
    cin >> n >> a;
    for(int i=0; i<a.length(); i++)
    {
        if(q==1){
            if(a[i]-48>=0 and a[i]-48<=9) q=0;
        }
        if(w==1){
            if(a[i]-97>=0 and a[i]-97<=26) w=0;
        }
        if(e==1){
            if(a[i]-65>=0 and a[i]-65<=26) e=0;
        }
        if(r==1){
            if(a[i]-33>=0 and a[i]-33<=64){
                if(a[i]=='!' ||a[i]=='@' ||a[i]=='#' ||a[i]=='$' ||a[i]=='^' ||a[i]=='&' ||a[i]=='*' ||a[i]=='(' ||a[i]==')' ||a[i]=='-' ||a[i]=='+')
                {
                    r=0;
                }
            }
        }
    }
    hasil=q+w+e+r;
    if((n+hasil)<6){
        hasil=hasil+(6-(hasil+n));
    }
    cout << hasil << endl;
    return 0;
}