#include <bits/stdc++.h>
#define int long long
using namespace std;

const int N=51;
const int mod = 998244353;

int dp[N][N][N][N];
int cnt[N][N], cnt2[4 * N];
int LIM = 2 * N;
int kdp[5 * N][4 * N], it_kdp = 0;

inline void add(int &x, int y) { x += y; if (x >= mod) x -= mod; }

void calc(vector <int> a, int L, int xL, int R, int xR)
{
    int n=a.size();
    vector <int> p; p.push_back(L);
    for (int i:a) p.push_back(i); p.push_back(R);
    memset(cnt, 0, sizeof(cnt));
    memset(cnt2, 0, sizeof(cnt2));
    if (xL == xR) {
        if (xL == 0) cnt[n][0] = 1;
        else cnt[0][n] = 1;
        for (int i = 0; i <= n; i++)
            for (int j = 0; j <= n; j++)
                if (cnt[i][j] != 0)
                    add(cnt2[i - j + LIM], cnt[i][j]);
        return;
    }

    for (int i = 0; i <= n + 1; i++)
        for (int j = 0; j <= n + 1; j++)
            for (int x = 0; x <= n + 1; x++)
                for (int y = 0; y <= n + 1; y++)
                    dp[i][j][x][y] = 0;

    dp[0][0][0][n+1] = 1;
    for (int len = 0; len < n; len++) {
        for (int i = 0; i <= n; i++) {
            int j = len - i;
            for (int lr = 0; lr <= n + 1; lr++)
                for (int lb = 0; lb <= n + 1; lb++)
                if (dp[i][j][lr][lb] != 0) {
                    int x = dp[i][j][lr][lb];
//                    cout << i << ' ' << j << ' ' << lr << ' ' << lb << " = " << x << '\n';
                    if (i + 1 <= lr) add(dp[i+1][j][lr][lb],x*(lr - i)%mod);
                    if (j + 1 <= n + 1 - lb) add(dp[i][j+1][lr][lb], x*(n + 1 - lb - j)%mod);
                    for (int new_pos = lr + 1; new_pos < lb; new_pos++) {
                        if (p[new_pos]-p[lr] <= p[lb]-p[new_pos])
                            add(dp[i+1][j][new_pos][lb],x);
                        else add(dp[i][j+1][lr][new_pos],x);
                    }
                }
        }
    }
    for (int i = 0; i <= n; i++) {
        int j = n - i;
        for (int lr = 0; lr <= n + 1; lr++)
            for (int lb = 0; lb <= n + 1; lb++)
        if (dp[i][j][lr][lb]) {
//            cout << i << ' ' << lr << " & " << j << ' ' << lb << " === " << dp[i][j][lr][lb] << '\n';
            add(cnt[i][j], dp[i][j][lr][lb]);
        }
    }

    for (int i = 0; i <= n; i++)
        for (int j = 0; j <= n; j++)
        if (cnt[i][j] != 0) {
            int x;
            if (xL == 0) x = (i - j + LIM);
            else x = (j - i + LIM);
            add(cnt2[x],cnt[i][j]);
        }

}

void upd_cnt() {
    it_kdp++;
    for (int sum = 0; sum < 4 * N; sum++)
        if (kdp[it_kdp-1][sum] != 0)
            for (int sum2 = 0; sum2 < 4 * N; sum2++)
                if (cnt2[sum2] != 0)
                {
                    int sum3 = sum + sum2 - LIM;
                    add(kdp[it_kdp][sum3],kdp[it_kdp-1][sum] * cnt2[sum2] % mod);
                }
}

const string vkt = "BLACK";

void solve() {
    int n, m;
    cin >> m >> n;
    vector <int> a(n);
    vector <pair<int,int>> b(m + 2);
    for (int i = 1; i <= m; i++) {
        cin >> b[i].first;
        string s; cin >> s;
        b[i].second = (s == vkt);
    }
    b[0]={-1e18,0};
    b[m+1]={1e18,1};
    sort(b.begin(), b.end());
    for (int i = 0; i < n; i++) cin >> a[i];
    sort(a.begin(), a.end());
    it_kdp = 0;
    kdp[it_kdp][LIM] = 1;
    for (int i = 1; i < b.size(); i++) {
        int L = b[i-1].first; int xL = b[i-1].second;
        int R = b[i].first; int xR = b[i].second;
        vector <int> tmp;
        for (int j = 0; j < n; j++)
            if (a[j] > L && a[j] < R) tmp.push_back(a[j]);
        calc(tmp, L, xL, R, xR);
        upd_cnt();
    }
    memset(cnt,0,sizeof(cnt));
    memset(cnt2,0,sizeof(cnt2));
    int sum = 0;
    for (int i = 1; i <= m; i++) {
        if (b[i].second == 0) sum++;
        else sum--;
    }
    cnt2[sum + LIM] = 1;
    upd_cnt();
    int ans = 0;
    for (int sum = 0; sum < 4 * N; sum++)
        if (sum > LIM) add(ans, kdp[it_kdp][sum]);
    cout << ans << '\n';
}

signed main()
{
    ios_base::sync_with_stdio(false);
//    cin.tie(nullptr); cout.tie(nullptr);
    solve();
    return 0;
//    int L, R, xL, xR;
//    cout << "L = "; cin >> L;
//    cout << "xL = "; cin >> xL;
//    cout << "R = "; cin >> R;
//    cout << "xR = "; cin >> xR;
//    int n; cout << "n = "; cin >> n;
//    vector <int> a(n);
//    for (int i = 0; i < n; i++) cin >> a[i];
//    it_kdp = 0;
//    kdp[it_kdp][LIM] = 1;
//    calc(a, L, xL, R, xR);
//    upd_cnt();
//    int ans = 0;
//    for (int sum = 0; sum < 4 * N; sum++)
//        if (sum > LIM) add(ans, kdp[it_kdp][sum]);
//    cout << ans << '\n';
}

/**
2 3
1 RED
10 BLACK
2 4 7
**/