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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int N,X,Y; cin >> N >> X >> Y;
    int room = X+Y;
    vector<vector<pair<long long,char>>> sepa(room);
    for(int i=0; i<N; i++){
        int p; cin >> p;
        char c; cin >> c;
        sepa.at(i%room).push_back({p,c});
    }

    long long answer = 0;
    vector<long long> A,B;
    for(auto se : sepa){
        long long a = 0,b = 0;
        for(auto [p,c] : se){
            if(c == 'A') a += p;
            else b += p;
        }
        if(a > b) A.push_back(a-b),answer += a;
        else if(a == b) answer += b;
        else B.push_back(b-a),answer += b;
    }
    sort(A.begin(),A.end()); sort(B.begin(),B.end());

    if(A.size() > X){
        while(X--) A.pop_back();
        for(auto a : A) answer -= a;
    }
    if(B.size() > Y){
        while(Y--) B.pop_back();
        for(auto b : B) answer -= b;
    }
    cout << answer << endl;
}