# -*- coding: utf-8 -*-
# @Time    : 2020/1/9 20:31
# @Author  : Henry_Yu
# @Email   : 371337601@qq.com
# @File    : abs.py
# @Software: PyCharm

def abs(n):
    if n<0:
        return -n
    else:
        return n

print(abs(-10))
