压缩，解压原文件。只要求输出的文件中整形数字少于输入文件中的数字既为压缩。-An input file is actually a set of integer values. Our goal is to compress the input file and create an

output file. If the number of the integers in the output file is less than the number of integers in the input file,

the output file is considered as “compressed” version of the input file. Please notice that we are NOT

interested in the file size BUT the number of integers in the files.