#include<bits/stdc++.h>
#define INF 0x3f3f3f3f
#define PI acos(-1)
#define endl "\n"
#define int long long
#define pb push_back
#define fi first
#define se second
using namespace std;
typedef pair<int, int> PII;
typedef unsigned long long ULL;
const int N = 1e6+5,mod=1e9+7,modd=998244353;
int ar[N],br[N];
int  k, s,n,m,sum1,len;
int cmp(int a, int b){	return a > b;}
int lowbit(int x){return x&(-x);}
int read() { int x=0,f=1; char c=getchar(); while(c<'0'||c>'9'){if(c=='-') f=-1;c=getchar();}
while(c>='0'&&c<='9') x=x*10+c-'0',c=getchar();return x*f;}
const double eps = 1e-8;
int tree[5000][5000];
int st[5000][5000];
signed main()
{
	int t=1;
	ios_base::sync_with_stdio(false);cin.tie(0); cout.tie(0);
 
	cin>>t;
	for(int ff=1;ff<= t;ff++)
	{
		int a, b,c,d, l, y, x, s, r,flag = 0,idx = 0,gg = 0,hh=0,res=0,sum=0, sum2 = 0;
		string str2,str,str3;

         //cin>>n;
		// for(int i=1;i<=n;i++)cin>>ar[i];
	      cin>>n>>m>>k;
		  for(int i=0;i<=n+2;i++)
		  {
			for(int j=0;j<=m+2;j++)
			{
				tree[i][j]=0;
				st[i][j]=0;
			}
		  }
		  cin>>str;
		  int upl=1,dol=n,lel=1,ril=m;
		  int x1=lel,y1=upl,x2=ril,y2=dol;
		  x=1;
		  for(int i=0;i<str.length();i++)
		  {
           if(str[i]=='U')y1++,y2++,upl=max(upl,y1),dol=min(dol,y2);
		   if(str[i]=='D')y2--,y1--,upl=max(upl,y1),dol=min(dol,y2);
		   if(str[i]=='L')x1++,x2++,lel=max(lel,x1),ril=min(ril,x2);
		   if(str[i]=='R')x2--,x1--,lel=max(lel,x1),ril=min(ril,x2);
		  }
		
		   int yuan=(dol-upl+1)*(ril-lel+1);
		  int que=yuan-k;
		
		//  cout<<yuan<<" "<<que<<endl;
		 
		 if(upl>dol||ril<lel)
		 {
			if(k==0)cout<<n*m<<endl;
			else cout<<0<<endl;
			continue;
		 }
	     
		x1=upl,y1=lel,x2=dol,y2=ril;
	 // cout<<upl<<" "<<dol<<" "<<lel<<" "<<ril<<endl;
//cout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
	
    st[x1][y1] = true;
    tree[x1][y1]++, tree[x2 + 1][y1]--, tree[x1][y2 + 1]--, tree[x2 + 1][y2 + 1]++;

           for(int i=0;i<str.length();i++)
		   {
       
		if(str[i]=='U')y1--,y2--;
		if(str[i]=='D')y2++,y1++;
		if(str[i]=='L')x1--,x2--;
		if(str[i]=='R')x2++,x1++;
		// cout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
		//if (st[x1][y1])continue;
       if(st[x1][y1])continue;
    st[x1][y1] = true;
    tree[x1][y1]++, tree[x2 + 1][y1]--, tree[x1][y2 + 1]--, tree[x2 + 1][y2 + 1]++;

		   }
         for(int i=1;i<=n;i++)
		  {
			for(int j=1;j<=m;j++)
			{
				tree[i][j] += tree[i - 1][j] + tree[i][j - 1] - tree[i - 1][j - 1];
			}
			//cout<<endl;
		  }

		  for(int i=1;i<=n;i++)
		  {
			for(int j=1;j<=m;j++)
			{
				
				//cout<<get(i,j)<<" ";
				if(tree[i][j]==que)sum++;
			}
			//cout<<endl;
		  }
		  cout<<sum<<endl;
	}
return 0;
}