N, X, Y = map(int, input().split())
r = X + Y
g = [[0, 0] for _ in range(r)]
m = ["A", "B"]
for i in range(N):
    P, c = input().split()
    P = int(P)
    g[i % r][m.index(c)] += P
g.sort(key=lambda gi: -abs(gi[0] - gi[1]))
ans = 0
for i in range(r):
    A, B = g[i][0], g[i][1]
    if A >= B:
        if X > 0:
            X -= 1
            ans += A
        else:
            Y -= 1
            ans += B
    else:
        if Y > 0:
            Y -= 1
            ans += B
        else:
            X -= 1
            ans += A
print(ans)
#print(*g)