#include<iostream>
#include<string.h>
using namespace std;
#define MAX 101
int main()
{
    char *p;
    int len,ori;
    cin >> len;
    ori=len;
    p = new char[len];
    cin >> p;
    
    int c=0,l=0,s=0,d=0,i=0;
    
    while(p[i]!='\0')
    {
        if(p[i]>=65&&p[i]<=90)
            c++;
        if(p[i]>=97&&p[i]<=122)
            l++;
        if(p[i]>=48&&p[i]<=57)
            d++;
        if(p[i]=='!'||p[i]=='@'||p[i]=='#'||p[i]=='$'||p[i]=='%'||p[i]=='^'||p[i]=='&'||p[i]=='*'||p[i]=='+'||p[i]=='-'||p[i]==')'||p[i]=='(')
            s++;
        
        i++;
    }
    
    if(!c)
        len++;
    if(!l)
        len++;
    if(!s)
        len++;
    if(!d)
        len++;
    
    while(len<6)
        len++;
        
    cout << len-ori;
    
    return (0);
}