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A10282 | $You're a Professional$

时间限制1s

内存限制256MB

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题目描述

A simple recommendation system would recommend a user things liked by a certain number of their friends. In this problem you will implement part of such a system. You are given user's friends' opinions about a list of items. You are also given a threshold $T$ — the minimal number of "likes" necessary for an item to be recommended to the user. Output the number of items in the list liked by at least $T$ of user's friends.

输入格式

The first line of the input will contain three space-separated integers: the number of friends $F$ ( $1<=F<=10$ ), the number of items $I$ ( $1<=I<=10$ ) and the threshold $T$ ( $1<=T<=F$ ). The following $F$ lines of input contain user's friends' opinions. $j$ -th character of $i$ -th line is 'Y' if $i$ -th friend likes $j$ -th item, and 'N' otherwise.

输出格式

Output an integer — the number of items liked by at least $T$ of user's friends.

输入输出样例

输入 #1

3 3 2
YYY
NNN
YNY

输出 #1

输入 #2

4 4 1
NNNY
NNYN
NYNN
YNNN

输出 #2

C++ 编辑器

输入

输出