#include<iostream>
using namespace std;
class Map{
   public:
    int map[2048][2048];
    void in(int x,int y){
        x=x+1024,y=y+1024;
        if(x<0||y<0||x>2000||y>2000){
            return;
        }
        else {
            this->map[x][y]=1;
        }
    };
    int get(int x,int y){
        x=x+1024,y=y+1024;
        if(x<0||y<0||x>2024||y>2024){
            return 0;
        }
        else {
            return this->map[x][y];
        }
    };
};
int max(int x,int y){
    return x>y?x:y;
}
int min(int x,int y){
    return x<y?x:y;
}
Map map;
int main(){
    int n ;
    cin>>n;
while(n--){
    int n,m,k;
    cin>>n>>m>>k;
    string in_str;
    cin>>in_str;
    int x=0,y=0;
    for(int i=0;i<=n;i++){
        for(int j=0;j<=m;j++){
            map.map[i+1024][j+1024]=0;
            map.map[i+1024][-j+1024]=0;
            map.map[-i+1024][j+1024]=0;
            map.map[-i+1024][-j+1024]=0;
        }
    }

    int xl=0,yl=0,xh=n,yh=m;
    int lox=0,loy=0;
    map.in(lox,loy);
    for(auto i:in_str){
        switch (i)
        {
        case 'U':lox+=1;map.in(lox,loy);break;
        case 'D':lox-=1;map.in(lox,loy);break;
        case 'L':loy+=1;map.in(lox,loy);break;
        case 'R':loy-=1;map.in(lox,loy);break;
        default:
            break;
        }
        xl=max(lox,xl);
        yl=max(loy,yl);
        xh=min(lox+n,xh);
        yh=min(loy+m,yh);
        //cout<<xl<<" "<<yl<<" "<<"sd"<<xh<<" "<<yh<<endl;
    }

    for( int i=1025-n;i<1024+n;i++){
        map.map[i][0]+=map.map[i-1][0];
        map.map[0][i]+=map.map[0][i-1];
    }
    for(int i=1025-n;i<1024+n;i++){
        for(int j=1025-m;j<1024+m;j++){
            int u =map.map[i-1][j];
            int l =map.map[i][j-1];
            int lu =map.map[i-1][j-1];
            map.map[i][j]+=u+l-lu;
           // if(map.map[i][j]!=0)cout<<i-1024<<"yp"<<j-1024<<" "<<map.map[i][j]<<" |";
        }
    }
    long long re =0;
    int height=xh-xl;
    int width =yh-yl;
    //cout<<height<<" "<<width<<" ";
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){

            int rx= xl-i;
            int ry= yl-j;
            int hx=rx+height-1;
            int hy=ry+width-1;
            int ru= map.get(hx,hy)-map.get(rx-1,hy)-map.get(hx,ry-1)+map.get(rx-1,ry-1);
            //cout<<map.get(i,j)<<" ";
            //cout<<ru<<" ";
            if(height*width-ru==k)re+=1;
        }
    }
    //cout<<endl;
    if( width<=0||height<=0) cout<<(k==0?n*m:0)<<endl;
    else cout<<re<<endl;


}
}