#include <iostream>
using namespace std;

bool b[24];

int main() {
    int n = 0;
    string s;
    cin >> s;
    for(auto i : s) {
        if(!b[i-'A']) {
            b[i-'A'] = true;
            n++;
        }
    }
    
    if(n == 1) cout << 3;
    else if(n == 2) cout << 5;
    else cout << 6;
    
    return 0;
}