#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n, m, a = 0, b = 0, i, j, k, mina = 0, maxa = 0, minb = 0, maxb = 0;
    char c;
    unsigned long int l;

    scanf("%d%d%d", &n, &m, &k);
    scanf("%c", &c);
    for (i = 0; i < k; i++)
    {
        scanf("%c", &c);
        if (c == 'U')
        {
            a--;
            if (a < mina)
                mina = a;
        }
        if (c == 'D')
            {
                a++;
                if (a > maxa)
                    maxa = a;
            }
        if (c == 'L')
            {
                b--;
                if (b < minb)
                    minb = b;
            }
        if (c == 'R')
            {
                b++;
                if (maxb < b)
                    maxb = b;
            }
    }

    l = (n - abs(mina) - abs(maxa)) * (m - abs(minb) - abs(maxb));
    printf("%lu", l);

    return 0;
}