#include <iostream>
using namespace std;

#include <atcoder/modint>
using mint = atcoder::modint;

mint w[4];

int main() {
    int N;
    cin >> N;
    long long suma = 0;
    int cnt3 = 0;

    mint ret = 1;

    for (int i = 0; i < N; ++i) {
        char c;
        int a;
        cin >> c >> a;
        suma += a;
        int d = (c == 'U' ? 0 : (c == 'F' ? 1 : (c == 'W' ? 2 : 3)));
        cnt3 += (d == 3);
        w[d] += 1 - (mint(N - 2) / (N - 1)).pow(a);
        ret *= mint(N - 1).pow(a);
    }
    cout << (w[0] * w[1] * w[2] * ret * cnt3).val() << endl;
}