题目描述Description

Given a series of n numbers, find the total number of different numbers.

For example: the numbers are {2, 2, 1, 3, 4, 4, 5}, and different numbers are {2, 1, 3, 4, 5}. The answer is 5.

输入格式Input

There are no more than 100 test cases. Each case contains two lines.

The first line is integer number 1 <= n <= 100.

The second line are the n integer numbers which are in range [1, 10^4].

输出格式Output

The total number of different numbers.

样例Sample

出题Author

CSGrandeur

来源Source

深圳技术大学第一届程序设计竞赛（SZTUCPC2021）