#!/usr/bin/env python
#coding:utf-8
import random
number = random.randint(1,100)
print "请输入一个100以内的自然数："
input_number = raw_input()
if number == int(input_number):
print "猜对了，这个数是："
print number
elif number > int(input_number):
print "小了"
input_number = raw_input()
elif number < int(input_number):
print "大了"
input_number = raw_input()
else:
print "错了。"