# Problem B

Morse Code Palindromes

A *Palindrome* is a word, number,
phrase, or other sequence of characters which reads the same
backward as forward, such as **madam** or
**racecar** or **1881**. Phrase palindromes ignore capitalization,
punctuation, and word boundaries. For example: **Madam I’m Adam.**

Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. Morse code is named after Samuel Morse, one of the inventors of the telegraph. The international morse code for letters and digits is:

(Note that the code for upper and lower case letters is the same.)

A word, number or phrase is a *Morse Code
Palindrome* if the morse code for the letters and digits in
the word, number or phrase reads the same backwards and
forwards (ignoring spaces between character codes). For
example:

**159**

**Footstool**

**A E**

Determine if an input string is a *Morse
Code Palindrome*.

## Input

The single input line contains a string of up to $80$ ASCII characters, possibly including spaces and other non-alphanumeric printable characters.

## Output

The single output line consists of the integer `1` if the input string (ignoring everything but
letters and digits) is a *Morse Code
Palindrome*. Otherwise the output line consists of the
integer `0`. If there are no letters or
digits in the input string, the output should be `0`.

Sample Input 1 | Sample Output 1 |
---|---|

hello |
0 |

Sample Input 2 | Sample Output 2 |
---|---|

159 |
1 |

Sample Input 3 | Sample Output 3 |
---|---|

Madam I'm Adam |
0 |

Sample Input 4 | Sample Output 4 |
---|---|

footstool |
1 |

Sample Input 5 | Sample Output 5 |
---|---|

SOS |
1 |

Sample Input 6 | Sample Output 6 |
---|---|

A E |
1 |