import sys
input=sys.stdin.readline
N,X,Y=map(int,input().split())
dat=[]
for _ in range(N):
    dat.append(list(map(str,input().split())))
point=[[0,0] for _ in range(X+Y)]
for i in range(N):
    p,c=dat[i]
    p=int(p)
    if c=='A':
        point[i%(X+Y)][0]+=p
    else:
        point[i%(X+Y)][1]+=p
lis=[]
for i in range(X+Y):
    if point[i]!=[0,0]:
        lis.append([-point[i][0]+point[i][1],i,'A'])
        lis.append([-point[i][1]+point[i][0],i,'B'])
lis.sort()
ans=['']*(X+Y)
countA,countB=X,Y
for sub,i,c in lis:
    if ans[i]=='':
        if c=='A':
            if countA>0:
                ans[i]='A'
                countA-=1
            else:
                ans[i]='B'
                countB-=1
        if c=='B':
            if countB>0:
                ans[i]='B'
                countB-=1
            else:
                ans[i]='A'
                countA-=1
fa=0
for i in range(N):
    if ans[i%(X+Y)]==dat[i][1]:
        fa+=int(dat[i][0])
print(fa)