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

int main() {
    int N, X, Y;
    cin >> N >> X >> Y;
    vector P(N, 0);
    vector c(N, 'A');
    for(int i = 0; i < N; i++) cin >> P[i] >> c[i];
    vector A(min(N, X+Y), 0LL), B(min(N, X+Y), 0LL);
    for(int i = 0; i < N; i++) {
        if(c[i] == 'A') A[i % (X+Y)] += (long long)P[i];
        else B[i % (X+Y)] += (long long)P[i];
    }
    long long res(0LL);
    int x(0), y(0);
    vector d(size(A), 'A');
    for(int i = 0; i < size(A); i++) {
        if(A[i] < B[i]) { y++; d[i] = 'B'; }
        if(B[i] < A[i]) { x++; d[i] = 'A'; }
        if(A[i] == B[i]) {
            if(x < y) { x++; d[i] = 'A'; }
            else { y++; d[i] = 'B'; }
        }
        res += max(A[i], B[i]);
    }
    vector C(min(N, X+Y), 0LL);
    for(int i = 0; i < size(A); i++) C[i] = abs(A[i]-B[i]);
    if(X < x) {
        priority_queue<long long> pq;
        for(int i = 0; i < size(A); i++) {
            if(d[i] == 'A') pq.push(-C[i]);
        }
        for(int i = 0; i < x-X; i++) {
            res += pq.top();
            pq.pop();
        }
    }
    if(Y < y) {
        priority_queue<long long> pq;
        for(int i = 0; i < size(A); i++) {
            if(d[i] == 'B') pq.push(-C[i]);
        }
        for(int i = 0; i < y-Y; i++) {
            res += pq.top();
            pq.pop();
        }
    }
    cout << res << endl;
    return 0;
}