import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons;
import core.bitop;

class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }

string COLOR(string s = "") { return "\x1b[" ~ s ~ "m"; }

bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }

int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }




void main() {
  try {
    for (; ; ) {
      const N = readInt;
      const X = readInt;
      const Y = readInt;
      auto P = new long[N];
      auto C = new char[N];
      foreach (i; 0 .. N) {
        P[i] = readLong;
        C[i] = readToken[0];
      }
      
      const M = X + Y;
      auto as = new long[M];
      auto bs = new long[M];
      foreach (i; 0 .. N) {
        ((C[i] == 'A') ? as : bs)[i % M] += P[i];
      }
      debug {
        writeln("as = ", as);
        writeln("bs = ", bs);
      }
      auto ds = new long[M];
      foreach (i; 0 .. M) ds[i] = bs[i] - as[i];
      ds.sort!"a > b";
      const ans = as.sum + ds[0 .. Y].sum;
      writeln(ans);
    }
  } catch (EOFException e) {
  }
}