//============================================================================
// Name        : Stroll.cpp
// Author      : 
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>
using namespace std;

int main() {
	istream &in = cin;
	ostream &out = cout;

	long n, m, k;
	long dx = 0, dy = 0;
	long minDX = 0, maxDX = 0, minDY = 0, maxDY = 0;

	in >> n >> m >> k;
	for (int i = 0; i < k; ++i) {
		//in.ignore();
		char c;
		in >> c;
		switch (c) {
		case 'L':
			dx--;
			break;
		case 'R':
			dx++;
			break;
		case 'U':
			dy--;
			break;
		case 'D':
			dy++;
			break;
		}
		minDX = min(dx, minDX); maxDX = max(dx, maxDX);
		minDY = min(dy, minDY); maxDY = max(dy, maxDY);
	}

	out << max(0l, (m + minDX - maxDX) * (n + minDY - maxDY));

	return 0;
}