#include <stdio.h>

typedef struct {
	long long key;
	int id;
} data;

typedef struct {
	data obj[200001];
	int size;
} max_heap;

void push(max_heap* h, data x)
{
	int i = ++(h->size), j = i >> 1;
	data tmp;
	h->obj[i] = x;
	while (j > 0) {
		if (h->obj[i].key > h->obj[j].key) {
			tmp = h->obj[j];
			h->obj[j] = h->obj[i];
			h->obj[i] = tmp;
			i = j;
			j >>= 1;
		} else break;
	}
}

data pop(max_heap* h)
{
	int i = 1, j = 2;
	data output = h->obj[1], tmp;
	h->obj[1] = h->obj[(h->size)--];
	while (j <= h->size) {
		if (j < h->size && h->obj[j^1].key > h->obj[j].key) j ^= 1;
		if (h->obj[j].key > h->obj[i].key) {
			tmp = h->obj[j];
			h->obj[j] = h->obj[i];
			h->obj[i] = tmp;
			i = j;
			j <<= 1;
		} else break;
	}
	return output;
}

int main()
{
	int i, N, X, Y, P[200001];
	char c[200001];
	scanf("%d %d %d", &N, &X, &Y);
	for (i = 1; i <= N; i++) scanf("%d %c", &(P[i]), &(c[i]));
	
	int j;
	long long ans = 0, tmp[2];
	max_heap h;
	data d;
	h.size = 0;
	for (i = 1; i <= N && i <= X + Y; i++) {
		for (j = i, tmp[0] = 0, tmp[1] = 0; j <= N; j += X + Y) {
			if (c[j] == 'A') tmp[0] += P[j];
			else tmp[1] += P[j];
		}
		d.key = tmp[0] - tmp[1];
		push(&h, d);
		ans += tmp[1];
	}
	while (X > 0 && h.size > 0) {
		if (h.obj[1].key <= 0 && h.size <= Y) break;
		X--;
		d = pop(&h);
		ans += d.key;
	}
	printf("%lld\n", ans);
	fflush(stdout);
	return 0;
}