#include <iostream>
#include <vector>
#include <algorithm>
#include <array>
#include <iterator>
#include <string>
#include <cctype>
#include <cstring>
#include <cstdlib>
#include <cassert>
#include <cmath>
#include <ctime>
#include <iomanip>
#include <numeric>
#include <stack>
#include <queue>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <bitset>
#include <random>
#include <utility>
#include <functional>
using namespace std;
void Main()
{
	int N,X,Y;
	cin >> N >> X >> Y;
	vector<long long> A(X + Y),B(X + Y);
	for(int i = 0;i < N;i++)
	{
		int P;
		char c;
		cin >> P >> c;
		if(c == 'A')
		{
			A[i % (X + Y)] += P;
		}
		else
		{
			B[i % (X + Y)] += P;
		}
	}
	long long ans = 0;
	for(int i = 0;i < X + Y;i++)
	{
		ans += A[i];
	}
	vector<long long> D(X + Y);
	for(int i = 0;i < X + Y;i++)
	{
		D[i] = B[i] - A[i];
	}
	sort(D.begin(),D.end());
	for(int i = 0;i < Y;i++)
	{
		ans += D[X + Y - i - 1];
	}
	cout << ans << "\n";
}
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int tt = 1;
	/* cin >> tt; */
	while(tt--) Main();
}