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

typedef unsigned int ui;
typedef unsigned long long ul;
typedef long long sl;

using namespace std;

string s;
int main(int argc, char* argv[])
{
    ios_base::sync_with_stdio(false);

    ui n;
    cin >> n >> s;

    string ss = "!@#$%^&*()-+";
    bool u = false, l = false, d = false, sp = false;
    for (auto c : s) {
        if (isdigit(c))
            d = true;
        if (c >= 'a' && c <= 'z')
            l = true;
        if (c >= 'A' && c <= 'Z')
            u = true;
        if (ss.find(c) != string::npos)
            sp = true;
    }

    ui len = 0;
    if (!u)
        ++len;
    if (!l)
        ++len;
    if (!d)
        ++len;
    if (!sp)
        ++len;

    while (n + len < 6)
        ++len;

    cout << len << endl;
    return 0;
}