N,X,Y=map(int,input().split())
client=[]
for i in range(N):
	P,c=input().split()
	P=int(P)
	client.append((P,c))
af=[]
bf=[]
a=0
b=0
ans=0
for i in range(X+Y):
	cnt=[0,0]
	for j in range(i,N,X+Y):
		P,c=client[j]
		if c=="A":
			cnt[0]+=P
		else:
			cnt[1]+=P
	if max(cnt[0],cnt[1])==0:
		continue
	if cnt[0]>=cnt[1]:
		a+=1
		ans+=cnt[0]
		af.append(abs(cnt[0]-cnt[1]))
	else:
		b+=1
		ans+=cnt[1]
		bf.append(abs(cnt[0]-cnt[1]))
af.sort(reverse=True)
bf.sort(reverse=True)
while len(af)>X:
	ans-=af.pop()
while len(bf)>Y:
	ans-=bf.pop()
print(ans)