#include<bits/stdc++.h>
#include<unordered_set>
typedef long long ll;
typedef long double ld;
#define debug(a) cout<<a<<'\n'
#define Pll pair<ll,ll>
#define PII pair<int,int>
#define ft first
#define sd second
using namespace std;
const int N = 2e3 + 10,M=1e7,base=1e6+10, mod = 998244353;
const ll inf = 1e18;
const ld eps = 1e-8;
ll n,k,m;
int g[N][N];

int main() {
	/*fstream f;
	f.open("C:\\Users\\Secourir-Devour\\Desktop\\hack.txt", ios::in);*/
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t;
	cin >> t;
	string s;
	ll x, y, z, d;
	while (t--) {
		cin >> n >> m >> k >> s;
		unordered_set<ll> ust;
		ll u = 1, d = n, l = 1, r = m;
		x = 0, y = 0;
		//到(0,0)的路径上坐标点集
		ust.insert(0);
		for (int i = 0; i < s.length(); ++i) {
			if (s[i] == 'U')++x;
			else if (s[i] == 'D')--x;
			else if (s[i] == 'L')++y;
			else --y;
			ust.insert(x*M+y);
			u = max(u, x + 1);
			d = min(d, x + n);
			l = max(l, y + 1);
			r = min(r, y + m);
		}
		if (d < u || r < l) {
			if(k)cout << 0 << '\n';
			else cout<<n*m<<'\n';
			continue;
		}
		int x1, y1, x2, y2;
		for (int i = 0; i <= n + 2; ++i) {
			for (int j = 0; j <= m + 2; ++j) {
				g[i][j] = 0;
			}
		}
		for (auto val : ust) {
			x = val / M;
			val %= M;
			if (val > base) { ++x; val -= M; }
			else if (val < -base) { --x; val += M; }
			y = val;
			x1 = u - x, y1 = l - y;
			x2 = d - x, y2 = r - y;
			x1 = max(x1, 1), y1 = max(y1, 1);
			x2 = min((ll)x2, n), y2 = min((ll)y2, m);
			if (x1 > n || x2<1 || y1>m || y1 < 1)continue;
			++g[x1][y1];
			--g[x1][y2 + 1];
			--g[x2 + 1][y1];
			++g[x2 + 1][y2 + 1];
		}
		int num = (d-u+1)*(r-l+1), cnt = 0;
		for (int i = 1; i <= n; ++i) {
			for (int j = 1; j <= m; ++j) {
				g[i][j] += g[i - 1][j] + g[i][j - 1] - g[i-1][j-1];
				if (g[i][j] == num-k)++cnt;
			}
		}
		cout << cnt << '\n';
	}
	return 0;
}

/*
1
3 18 33
UDRLR
*/