#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 1000000000000000001


int main(){
	
	int N;
	int c[2];
	cin>>N>>c[0]>>c[1];
	
	vector cnt(c[0]+c[1],vector<long long>(2,0));
	rep(i,N){
		long long t;
		cin>>t;
		char tt;
		cin>>tt;
		cnt[i%(c[0]+c[1])][tt-'A'] += t;
	}
	
	long long ans = 0;
	vector<long long> hoge;
	rep(i,c[0]+c[1]){
		ans += cnt[i][0];
		hoge.push_back(cnt[i][1]-cnt[i][0]);
	}
	sort(hoge.rbegin(),hoge.rend());
	
	rep(i,c[1]){
		ans += hoge[i];
	}
	cout<<ans<<endl;
	
	return 0;
}