#include <iostream>
#include <fstream>
#include <cmath>

using namespace std;

int n, m, u, d, l ,r, k, cells;

char ch;

int main()
{

    cin>>n>>m>>k;
    for(int i = 0; i < k; i++){

        cin>>ch;

        if(ch == 'U')
            u++;
        if(ch == 'D')
            d++;
        if(ch == 'L')
            l++;
        if(ch == 'R')
            r++;

    }

    n = n - abs(u - d);
    m = m - abs(l - r);

    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= m; j++)
            if(i >= u && i <= n - d && j >= l && j <= m - r)
                cells++;

    cout<<cells;

    return 0;
}