use proconio::input;

fn main() {
    input! {
        n:usize,
        x:usize,
        y:usize,
        pc:[(i64,char);n],
    }

    let mut abs = vec![(0, 0); x + y];
    for i in 0..n {
        if pc[i].1 == 'A' {
            abs[i % (x + y)].0 += pc[i].0;
        } else {
            abs[i % (x + y)].1 += pc[i].0;
        }
    }

    abs.sort_by(|&x, &y| (y.0 - y.1).cmp(&(x.0 - x.1)));

    let mut ans = 0;
    for i in 0..x {
        ans += abs[i].0;
    }
    for i in 0..y {
        ans += abs[x + i].1;
    }

    println!("{}", ans);
}