Statement

When Timothy teaches younger students in the SCZ, he needs to offer different courses based on their abilities, which requires knowing their average scores.

Input

The first line contains an integer $t$ $(1\leq t\leq 1000)$ representing the number of children;

The second line contains $t$ integers $s_i$ separated by spaces, representing their scores $(0\leq s_i\leq 150)$

Output

Output a rounded integer representing the average.

Samples

3
100 99 98

99