#!/usr/bin/python
# -*- coding: UTF-8 -*-

"""
题目:输入数组,最大的与第一个元素交换,最小的与最后一个元素交换,输出数组。
"""

def inp(numbers,num):
 for i in range(num):
 numbers.append(int(raw_input('input a number:\n')))

def max_min(array,p):
 max = min =0
 for i in range(1,len(array) - 1):
 p = i 
 if array[p] > array[max]:max = p
 elif array[p] < array[min]:min = p
 k = max
 l = min
 array[0],array[k] = array[k],array[0]
 array[num - 1],array[l] = array[l],array[num - 1]

def outp(numbers):
 for i in range(len(numbers)):
 print numbers[i]

if __name__ == '__main__':
 array = []
 num = 4
 p = 0
 inp(array,num)
 max_min(array,p)
 outp(array)