100 atcoder#ABC091B. [ABC091B] Two Colors Card Game
[ABC091B] Two Colors Card Game
Score : points
Problem Statement
Takahashi has blue cards and red cards. A string is written on each card. The string written on the -th blue card is , and the string written on the -th red card is .
Takahashi will now announce a string, and then check every card. Each time he finds a blue card with the string announced by him, he will earn yen (the currency of Japan); each time he finds a red card with that string, he will lose yen.
Here, we only consider the case where the string announced by Takahashi and the string on the card are exactly the same. For example, if he announces atcoder
, he will not earn money even if there are blue cards with atcoderr
, atcode
, btcoder
, and so on. (On the other hand, he will not lose money even if there are red cards with such strings, either.)
At most how much can he earn on balance?
Note that the same string may be written on multiple cards.
Constraints
- and are integers.
- are all strings of lengths between and (inclusive) consisting of lowercase English letters.
Input
Input is given from Standard Input in the following format:
Output
If Takahashi can earn at most yen on balance, print .
3
apple
orange
apple
1
grape
2
He can earn yen by announcing apple
.
3
apple
orange
apple
5
apple
apple
apple
apple
apple
1
If he announces apple
, he will lose yen. If he announces orange
, he can earn yen.
1
voldemort
10
voldemort
voldemort
voldemort
voldemort
voldemort
voldemort
voldemort
voldemort
voldemort
voldemort
0
If he announces voldemort
, he will lose yen. If he announces orange
, for example, he can avoid losing a yen.
6
red
red
blue
yellow
yellow
red
5
red
red
yellow
green
blue
1