通过键盘输入一串小写字母(a~z)组成的字符串。请编写一个字符串压缩程序，

将字符串中连续出席的重复字母进行压缩，并输出压缩后的字符串。

压缩规则：

1. 仅压缩连续重复出现的字符。比如字符串"abcbc"由于无连续重复字符，压缩后的字符串还是"abcbc".

2. 压缩字段的格式为"字符重复的次数+字符"。例如：字符串"xxxyyyyyyz"压缩后就成为"3x6yz"-Through the keyboard input string lowercase letters (a ~ z) consisting of the string. Please write a string compression program,

The presence of a continuous string of letters repeated compression, and outputs the compressed string.

Compression rules:

1 continuous compression only recurring characters. Such as the string "abcbc" because without continuous repeating characters, compressed string or "abcbc".

2 compression format field "character of repetitions+ character." For example: the string "xxxyyyyyyz" compression after a "3x6yz"