#include<bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define pb2 pop_back
#define mp make_pair
#define REPP(i,l,r,c) for (int i=l;i<r;i+=c)
#define FOR(i,n) for (int i=0;i<n;i++)
#define REP(i,l,r) for (int i=l;i<r;i++)
#define REPS(i,l,r) for (int i=l;i<=r;i++)
#define FORD(i,n) for (int i=n-1;i>=0;i--)
#define REPD(i,l,r) for (int i=r-1;i>=l;i--)
#define REPDS(i,l,r) for (int i=r;i>=l;i--)
#define test puts("test")
#define line puts("")
#define print(x) cout<<x<<"\n"
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;

const int INF=1901486712;
const int MOD=1000000007;
const double PI=acos(-1);
const double EPS=1E-9;

bool between(int x,int l,int r) {
	return (l<=x && x<=r);
}

string tostring(int x) {
	char dum[20]; sprintf(dum,"%d",x);
	string ret(dum); return ret;
}

ll rb(ll l,ll r) {
	double temp=(double)rand();
	temp/=(RAND_MAX+1.0);
	temp*=(r-l+1);
	temp+=l;
	return temp;
}

string numbers = "0123456789";
string lower_case = "abcdefghijklmnopqrstuvwxyz";
string upper_case = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string sss = "!@#$%^&*()-+";

int n;
string S;

int main() {
	cin>>n;
	cin>>S;
	int ans=0;
	bool cek=false;
	FOR(i,S.size()) if (between(S[i],'0','9')) {
		cek=true; break;
	}
	if (!cek) ans++, S+="0";
	cek=false;
	FOR(i,S.size()) if (between(S[i],'a','z')) {
		cek=true; break;
	}
	if (!cek) ans++, S+="a";
	cek=false;
	FOR(i,S.size()) if (between(S[i],'A','Z')) {
		cek=true; break;
	}
	if (!cek) ans++, S+="A";
	cek=false;
	FOR(i,S.size()) FOR(j,sss.size()) if (S[i]==sss[j]) {
		cek=true; goto hell;
	}
	hell:;
	if (!cek) ans++, S+="!";
	while (S.size()<6) S+='a', ans++;
	cout<<ans<<endl;
	return 0;
}