Python problem For this exercise, a list of non-negative numbers will be given, for which the following operation can be done: subtract 1 from two contiguous elements from the list. It must say whether after any number of operations the list can be converted to a list of zeros.   Entry The input will be a list of non-negative integers x_i such that 0 <= x_i <= 2000000000. ". Departure If the given list can be converted to a list of zeros with the operation defined above, print "YES", otherwise, print "NO". Examples Input Example 1 1 2 Output Example 1 NOT Input Example 2 2 4 2 Output Example 2 YES Más información sobre este texto de origenPara obtener más información sobre la traducción, se necesita el texto de origen Enviar comentarios Paneles laterales

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Python problem

For this exercise, a list of non-negative numbers will be given, for which the following operation can be done: subtract 1 from two contiguous elements from the list.


It must say whether after any number of operations the list can be converted to a list of zeros.

 

Entry
The input will be a list of non-negative integers x_i such that 0 <= x_i <= 2000000000. ".


Departure
If the given list can be converted to a list of zeros with the operation defined above, print "YES", otherwise, print "NO".


Examples

Input Example 1

1 2
Output Example 1

NOT

Input Example 2

2 4 2
Output Example 2

YES
Más información sobre este texto de origenPara obtener más información sobre la traducción, se necesita el texto de origen
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