// 

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;

using ll = long long;

#define rep(i, n) for (int i=0; i<(int)(n); ++(i))
#define rep3(i, m, n) for (int i=(m); (i)<(int)(n); ++(i))
#define repr(i, n) for (int i=(int)(n)-1; (i)>=0; --(i))
#define rep3r(i, m, n) for (int i=(int)(n)-1; (i)>=(int)(m); --(i))
#define all(x) (x).begin(), (x).end()

const int INF = (int)(1e9);

int main() {
	int n, x, y;
	cin >> n >> x >> y;
	vector<int> p(n), c(n);
	rep(i, n) {
		char ci;
		cin >> p[i] >> ci;
		c[i] = ci - 'A';
	}
	int m = x + y;
	vector<vector<ll>> ab(m, vector<ll>(2));
	rep(i, n) ab[i%m][c[i]] += p[i];
	vector<int> ord(m);
	iota(all(ord), 0);
	sort(all(ord), [&](int li, int ri) -> bool { return ab[li][0]-ab[li][1] > ab[ri][0]-ab[ri][1]; });
	ll res = 0;
	rep(i, m) {
		if (i < x) res += ab[ord[i]][0];
		else res += ab[ord[i]][1];
	}
	cout << res << endl;
	return 0;
}