N,X,Y=map(int, input().split())

D=[[0,0] for i in range(X+Y)]
for i in range(N):
  c,p=input().split()
  if p=='A':
    p=0
  else:
    p=1
  c=int(c)
  D[i%(X+Y)][p]+=c 

E=[]
for i in range(len(D)):
  x,y=D[i]
  E.append((x-y,i))
E=sorted(E)[::-1]
F=[1]*(X+Y)
for i in range(X):
  F[E[i][1]]=0
ans=0
for i in range(X+Y):
  ans+=D[i][F[i]] 
print(ans)