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


int main() {
    int n; cin >> n;
    string input; cin >> input;
    int size = 0;
    bool checkNum = false;
    for_each(input.begin(), input.end(), [&checkNum](auto& ch){ if (isdigit(ch)) checkNum = true;});
    if (!checkNum)
        size++;
    bool checkLow = false;
    for_each(input.begin(), input.end(), [&checkLow](auto& ch){ if (islower(ch)) checkLow = true;});
    if (!checkLow)
        size++;
    bool checkUp = false;
    for_each(input.begin(), input.end(), [&checkUp](auto& ch){ if (isupper(ch)) checkUp = true;});
    if (!checkUp)
        size++;
    bool checkPunct = false;
    for_each(input.begin(), input.end(), [&checkPunct](auto& ch){ if (ispunct(ch)) checkPunct = true;});
    if (!checkPunct)
        size++;
    while (size + input.size() < 6)
        size++;
    cout << size;
    return 0;
}