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

using namespace std;

int n, m, u, d, l ,r, k, lines, cols;

char ch;

int main()
{

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

        cin>>ch;

        if(ch == 'U')
            lines--;

        if(ch == 'D')
            lines++;

        if(ch == 'L')
            cols--;

        if(ch == 'R')
            cols++;

        u = min(u, lines);
        d = max(d, lines);
        l = min(l, cols);
        d = min(d, cols);

    }

    n = n - d + u;
    m = m - r + l;

    cout<<n*m;

    return 0;
}