Poker Hand

You are given a five-card hand drawn from a standard $52$-card deck. The strength of your hand is the maximum value $k$ such that there are $k$ cards in your hand that have the same rank.

Compute the strength of your hand.

The input will consist of a single line, with five two-character strings separated by spaces.

The first character in each string will be the rank of the
card, and will be one of `A23456789TJQK`. The
second character in the string will be the suit of the card,
and will be one of `CDHS`.

You may assume all the strings are distinct.

Output, on a single line, the strength of your hand.

Sample Input 1 | Sample Output 1 |
---|---|

AC AD AH AS KD |
4 |

Sample Input 2 | Sample Output 2 |
---|---|

2C 4D 4H 2D 2H |
3 |

Sample Input 3 | Sample Output 3 |
---|---|

AH 2H 3H 4H 5H |
1 |