Nhóm meme brainrot

a = input()
b = input()
tong = 0
chu_cai = "abcdefghijklmnopqrstuvwxyz"
for c in chu_cai:
dem_a = 0
dem_b = 0
for i in a:
if i == c:
dem_a += 1
for j in b:
if j == c:
dem_b += 1
tong += min(dem_a, dem_b)
print(tong)

n,m=map(int,input().split())
hs=list(map(int,input().split()))
chuong=[0] * (n+1)
for i in hs:
chuong[i]+=1
for i in range(1,n+1):
if chuong[i]==0:
print(i,end=' ')

n,m=map(int,input().split())
hs=list(map(int,input().split()))
chuong=[0] * (n+1)
for i in hs:
chuong[i]+=1
for i in range(1,n+1):
if chuong[i]==0:
print(i,end=' ')

n=int(input())
a=list(map(int,input().split()))
chuong=[0] * (max(a)+1)
for i in a:
chuong[i]+=1
dem=0
for i in range(1,max(a)+1):
dem+=chuong[i]//2
print(dem)