Programming challenge description: A number is a self-describing number when (assuming digit positions are labeled 0 to N-1), the digit in each position is equal to the number of times that that digit appears in the number.
Input:
Your program should read lines of text from standard input. Each line contains a single positive integer, N.
Output:
For each input N, print 1 to standard output if N is a self-describing number. Otherwise, print 0.
For the curious, here''s how 2020 is a self-describing number: Position 0 has value 2 and there are two 0s in the number. Position 1 has value 0 because there are no 1's in the number. Position 2 has value 2 and there are two 2's. And the position 3 has value 0 and there are zero 3's.
Test 1
Test Input
2020
Expected Output
1
Test 2
Test Input
22
Expected Output
1
Test 2
Test Input
22
Expected Output
0
Test 3
Test Input
1210
Expected Output
1

this does not make any sense.. i you can reword that i can maybe you

a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.