#include <bits/stdc++.h>
//#include <atcoder/modint>

using namespace std;
//using namespace atcoder;
using ll = long long;
//using mint = modint998244353;

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int L;
    string S;
    cin >> L >> S;
    L--;
    vector<int> v = {390,429,468,507,546};
    cout << (S[0] == 'B' ? v[L+1] : v[L]) << endl;

    return 0;
}