#include<iostream>
using namespace std;
int n,m,nrc,rez,U,D,L,R,mu,md,ml,mr;
int i,j;
char K;
int main()
{
	cin>>n>>m>>nrc;
	for(i=1;i<=nrc;i++)
	{
		//scanf("%c",K);
		cin>>K;
		if(K=='U')
			U++;
		if(K=='D')
			D++;
		if(K=='R')
			R++;
		if(K=='L')
			L++;
		if(mu<U-D)
			mu=U-D;
		if(md<D-U)
			mu=D-U;
		if(mr<R-L)
			mr=R-L;
		if(ml<L-R)
			ml=L-R;
	}
	n=n-md+mu;
	m=m-ml+mr;
	if(n>0 && m>0)
		cout<<m*n;
	else
		cout<<0;
	return 0;
}