Count Passing Scores

Source: Phước Hưng OJ

Version: Phuoc Hung OJ Extended

Problem Statement

Given n integer scores from 0 to 10, count how many scores are at least 5.

Input

n in [0,10000], followed by n integer scores in [0,10].

Output

The number of scores >=5.

Subtasks

• Subtask 1 (20%): $n\le5$, điểm $0..10$.
• Subtask 2 (30%): $n\le100$, điểm $0..10$.
• Subtask 3 (50%): $n\le10000$, điểm $0..10$.

Examples

Example 1

Input

5
4 5 10 0 6

Output

3

Explanation

5, 10, and 6 pass; score 5 is included.

Example 2

Input

0

Output

0

Explanation

There are no scores.