102221: [AtCoder]ABC222 B - Failing Grade

Problem Statement

$N$ students took an exam. The students are labeled as Student $1$, Student $2$, $\dots$, Student $N$, and Student $i$ scored $a_i$ points.

A student who scored less than $P$ points are considered to have failed the exam and cannot earn the credit. Find the number of students who failed the exam.

Constraints

• $1 \leq N \leq 10^5$
• $1 \leq P \leq 100$
• $0 \leq a_i \leq 100$ $(1 \leq i \leq N)$
• All values in input are integers.

Input

Input is given from Standard Input in the following format:

$N$ $P$
$a_1$ $a_2$ $\dots$ $a_N$

Output

Print the number of students who failed the exam.

Sample Input 1

4 50
80 60 40 0

Sample Output 1

2

Students $1$ and $2$, who scored $80$ and $60$ points, respectively, succeeded in scoring at least $50$ points to earn the credit.
On the other hand, Students $3$ and $4$, who scored $40$ and $0$ points, respectively, fell below $50$ points and failed the exam. Thus, the answer is $2$.

Sample Input 2

3 90
89 89 89

Sample Output 2

3

Sample Input 3

2 22
6 37

Sample Output 3

1

问题描述

N个学生参加了一次考试。学生们被标记为学生1，学生2，……，学生N，学生i的分数为a_i。

分数低于P分的学生被认为考试失败，无法获得学分。找出考试失败的学生人数。

限制条件

• $1 \leq N \leq 10^5$
• $1 \leq P \leq 100$
• $0 \leq a_i \leq 100$ $(1 \leq i \leq N)$
• 输入中的所有值都是整数。

输入

从标准输入按以下格式获取输入：

$N$ $P$
$a_1$ $a_2$ $\dots$ $a_N$

输出

输出考试失败的学生人数。

样例输入1

4 50
80 60 40 0

样例输出1

2

学生1和2，分别获得80和60分，成功获得了至少50分的学分。
另一方面，学生3和4，分别获得40和0分，低于50分，考试失败。因此，答案是2。

样例输入2

3 90
89 89 89

样例输出2

3

样例输入3

2 22
6 37

样例输出3

1