#include <iostream>
#include <fstream>
#include <string.h>
#include <algorithm>
#include <fstream>
#include <bitset>
#include <map>
#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <utility>
#include <string>
#include <iomanip>
#include <cstring>

#define vint vector<int>::iterator
#define vintp vector<pair<int,int> >::iterator
#define inf 1000000
#define ll long long
#define maxn 100010
#define mod 666013

using namespace std;

ifstream fin ("a.in");
ofstream fout("a.out");

char s[1001*1001];
int n,m,k,x,y,minvx,maxvx,minvy,maxvy;

int main ()
{
    cin>>n>>m>>k;

    cin>>s;

    int len = strlen (s);

    for (int i=0; i<len; ++i)
    {
        if (s[i] == 'U')
        {
            x--;

            minvx = min (minvx,x);
        }
        else if (s[i] == 'D')
        {
            x++;

            maxvx = max (maxvx,x);
        }
        else if (s[i] == 'L')
        {
            y--;

            minvy = min (minvy,y);
        }
        else
        {
            y++;
            maxvy = max (maxvy,y);
        }
    }

    n = n-maxvx + minvx;
    m = m-maxvy + minvy;

    cout<<max(n,0)*max(m,0);
}