#include <bits/stdc++.h>

using namespace std;

#define TASK            "TASK"
#define ft              first
#define nd              second
#define FOR(i, a, b)    for(int i = a; i <= b; ++i)
#define FORD(i, a, b)   for(int i = a; i >= b; --i)
#define REP(i, a, b)    for(int i = a; i < b; ++i)
#define REPD(i, a, b)   for(int i = (int)a-1; i >= b; --i)
#define ___unique(a)    sort(a.begin(), a.end()); a.resize(unique(a.begin(), a.end())-a.begin());
#define fast            ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);

string s;
bool get(int lo, int hi) {
    REP(i, 0, s.size()) if (lo <= s[i] && s[i] <= hi) return false;
    return true;
}
int main() {

    fast;

    int n; cin >> n;
    int prv = n;
    cin >> s;
    string tmp = "!@#$%^&*()-+";
    int current = n;
    current += get('a', 'z') + get('A', 'Z') + get('0', '9');
    bool OK = true;
    REP(i, 0, s.size())
        REP(j, 0, tmp.size()) if (s[i] == tmp[j]) OK = false;
    if (OK) current ++;
    if (current < 6) cout << 6 - prv; else cout << current - prv;

    return 0;
}