Description:

we wish you a merry Christmas!
and a happy new year!
I'll bring you some figgy pudding,
and bring it our here.!
I'll bring you some figgy pudding,
and bring it our here.!
we wont go until we get some,
so bring some out here!
we wont go until we get some,
so bring some out here!
......
It's Christmas time again. And our mhBigCow falls in love with a girl again.As we all know, mhBigCow is a little shy to express his love to that girl. As we all know again,mhBigCow is quite a excellent coder,so he chooses to encode his message into binary bits. ASCII includes definitions for 128 characters: 33 are non-printing control characters (now mostly obsolete) that affect how text and space is processed; 94 are printable characters, and the space is considered an invisible graphic. The most commonly used character encoding on the World Wide Web was US-ASCII until 2008, when it was surpassed by UTF-8.
Simplified,mhBigCow chooses 8-bits to represent a char.He codes all night long and give the paper with the message to the girl. But the problem comes: The girl knows nothing about ASCII..So she asks you for help.
As a good friend of mhBigCow,can you help her ?

Input:

There are several test cases. Each test case with only one line of binary string. Note the length of the string will not exceed 1000.

Output:

For each test case, you should output one line containing the result string you get. Note that if the length of input string is not a multiple of 8,just output "oops! what is this".

Sample Input:

0110100001100101011011000110110001101111001011000110100100100000011011000110111101110110011001010010000001111001011011110111010100101110

Sample Output:

hello,i love you.