N,x,y=map(int,input().split())
v1=[0]*(x+y)
v2=[0]*(x+y)
L1=[]
L2=[]
for i in range(N):
  p,c=input().split()
  p=int(p)
  if c=='A':
    L1.append(p)
    v1[i%(x+y)]+=p
  else:
    L2.append(p)
    v2[i%(x+y)]+=p
if N>x+y:
  L=[]
  for i in range(x+y):
    L.append((v1[i]-v2[i],v1[i]))
  result=0
  L.sort(reverse=True)
  for i in range(x+y):
    z,w=L[i][:]
    if i<x:
      result+=w
    else:
      result+=w-z
  print(result)
else:
  L1.sort(reverse=True)
  L2.sort(reverse=True)
  result=0
  for i in range(len(L1)):
    if i>=x:
      break
    result+=L1[i]
  for i in range(len(L2)):
    if i>=y:
      break
    result+=L2[i]
  print(result)