#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int n, x, y;
    cin >> n >> x >> y;
    vector<ll> p(n);
    vector<char> c(n);
    rep(i,n) cin >> p[i] >> c[i];
    ll ans = 0;
    int m = x+y;
    vector<ll> a(m), b(m);
    rep(i,n){
        if(c[i]=='A') a[i%m] += p[i];
        else b[i%m] += p[i];
    }
    vector<P> sum;
    rep(i,m) sum.emplace_back(a[i]-b[i], b[i]);
    sort(sum.rbegin(),sum.rend());
    rep(i,x) ans += sum[i].first+sum[i].second;
    for(int i=x;i<m;i++) ans += sum[i].second;
    cout << ans << endl;
    return 0;
}