#include<bits/stdc++.h>

using namespace std;
#define int long long
#define endl '\n'
typedef pair<int, int> pii;
const int inf = 1e18;
const int N = 2e5 + 5;

map<char, pii> op;

void init() {
    op['U'] = {-1, 0};
    op['L'] = {0, -1};
    op['D'] = {1, 0};
    op['R'] = {0, 1};
}

void solve() {
    int n, m, k;
    cin >> n >> m >> k;
    string s;
    cin >> s;

    int u = 1, d = n, l = 1, r = n;
    stack<char> xx, yy;

    for (auto ch: s) {
        if (u > d || l > r) {
            if (k == 0) cout << n * m << endl;
            else cout << 0 << endl;
            return;
        }
        if (ch == 'U' || ch == 'D') {
            if (xx.empty() || xx.top() == ch) {
                xx.push(ch);
                if (ch == 'D') d = min(d, n - (int) xx.size());
                if (ch == 'U') u = max((int) xx.size() + 1, u);
            } else xx.pop();
        } else {
            if (yy.empty() || yy.top() == ch) {
                yy.push(ch);
                if (ch == 'R') r = min(r, m - (int) yy.size());
                if (ch == 'L') l = max((int) yy.size() + 1, l);
            } else yy.pop();
        }
    }

    vector<vector<int>> fl(n + 5, vector<int>(m + 5, 0));
    vector<vector<int>> mp(n + 5, vector<int>(m + 5, 0));

    fl[u][l] = 1;
    mp[u][l]++;
    mp[d + 1][r + 1]++;
    mp[d + 1][l]--;
    mp[u][r + 1]--;

    for (auto ch: s) {
        u += op[ch].first, d += op[ch].first;
        l += op[ch].second, r += op[ch].second;
        if (fl[u][l]) continue;
        fl[u][l] = 1;
        mp[u][l]++;
        mp[d + 1][r + 1]++;
        mp[d + 1][l]--;
        mp[u][r + 1]--;
    }
    int ans = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            mp[i][j] += (mp[i - 1][j] + mp[i][j - 1] - mp[i - 1][j - 1]);
            if (mp[i][j] == (d - u + 1) * (r - l + 1) - k) {
                ans++;
            }
        }
    }
    cout << ans << endl;
}

signed main() {
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int _ = 1;
    cin >> _;
    init();
    while (_--) {
        solve();
    }
    return 0;
}