//#pragma GCC optimize("Ofast", "unroll-loops")
//#pragma GCC target("sse", "sse2", "sse3", "ssse3", "sse4")
#ifdef LOCAL
#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstdint>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <random>
#include <deque>
#include <functional>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <complex>
#include <numeric>
#include <cassert>
#include <array>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <thread>
#else
#include <bits/stdc++.h>
#endif

#define all(a) a.begin(),a.end()
#define len(a) (int)(a.size())
#define mp make_pair
#define pb push_back
#define fir first
#define sec second
#define fi first
#define se second

using namespace std;

typedef pair<int, int> pii;
typedef long long ll;
typedef long double ld;

template<typename T>
inline bool umin(T &a, T b) {
    if (b < a) {
        a = b;
        return true;
    }
    return false;
}

template<typename T>
inline bool umax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

#ifdef LOCAL
#define DEBUG for (bool _FLAG = true; _FLAG; _FLAG = false)
#define LOG(...) print(#__VA_ARGS__" ::", __VA_ARGS__) << endl
template <class ...Ts> auto &print(Ts ...ts) { return ((cerr << ts << " "), ...); }
#else
#define DEBUG while (false)
#define LOG(...)
#endif // LOCAL

const int max_n = -1, inf = 1000111222;


inline void test_case () {
    int n, m, k;
    cin >> n >> m >> k;
    string s;
    cin >> s;
    int X[2] = {}, Y[2] = {}, x = 0, y = 0;
    for (auto &i : s) {
        if (i == 'U') {
            x -= 1;
        }
        else if (i == 'D') {
            x += 1;
        }
        else if (i == 'L') {
            y -= 1;
        }
        else {
            assert(i == 'R');
            y += 1;
        }
        umax(X[1], x);
        umin(X[0], x);
        umax(Y[1], y);
        umin(Y[0], y);
    }
    int lx = -X[0];
    int ly = -Y[0];
    int rx = n - 1 - X[1];
    int ry = m - 1 - Y[1];
    if (lx > rx || ly > ry) {
        if (k == 0) {
            cout << n * m << '\n';
        }
        else {
            cout << "0\n";
        }
        return;
    }
    int ans = 0;
    x = y = 0;
    vector <pii> have;
    have.reserve(len(s) + 1);
    have.pb({0, 0});
    for (auto &i : s) {
        if (i == 'U') {
            x -= 1;
        }
        else if (i == 'D') {
            x += 1;
        }
        else if (i == 'L') {
            y -= 1;
        }
        else {
            assert(i == 'R');
            y += 1;
        }
        have.pb({x, y});
    }
    sort(all(have));
    have.erase(unique(all(have)), have.end());
    vector <vector <int> > a(n + 1, vector <int> (m + 1));
    auto add = [&] (int cx, int cy, int val) {
        umax(cx, 0);
        umax(cy, 0);
        umin(cx, n);
        umin(cy, m);
        a[cx][cy] += val;
    };
    for (auto &i : have) {
        int xx, yy;
        tie(xx, yy) = i;
        add(xx + lx, yy + ly, 1);
        add(xx + rx + 1, yy + ry + 1, 1);
        add(xx + rx + 1, yy + ly, -1);
        add(xx + lx, yy + ry + 1, -1);
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (i) {
                a[i][j] += a[i - 1][j];
            }
            if (j) {
                a[i][j] += a[i][j - 1];
            }
            if (i && j) {
                a[i][j] -= a[i - 1][j - 1];
            }
        }
    }
    int now = (rx - lx + 1) * (ry - ly + 1);
    LOG(now, n, m, k);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            int alive = now - a[i][j];
            if (alive == k) {
                ++ans;
            }
        }
    }
    cout << ans << '\n';
}


int main() {
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int t = 1;
    cin >> t;
    for (int test = 1; test <= t; test++) {
        test_case();
    }
}