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upszn14492015-07-13 12:47:28
Programming
upszn1449, 2015-07-13 12:47:28

How to find an article on Habré about getting the number 100 from 6 digits?

Hello. I once read an article on Habré, in which the author talked about his method of obtaining a given number (most often 100) from a random set of numbers (for example, a ticket number) by substituting different signs of arithmetic operations, brackets, and, possibly, raising to a degree. At the end of the article, a list of six-digit (in my opinion) numbers was given, from which, under the given conditions, the solution would not work. I can not find. The articles below are similar, but not the same.
habrahabr.ru/post/189982
habrahabr.ru/post/13235
habrahabr.ru/post/115066
habrahabr.ru/sandbox/81807

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2 answer(s)
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Mrrl, 2015-07-13
@upszn1449

There was definitely no exponentiation there. The list is here:
https://www.dropbox.com/s/v1gp0yp62kr1kdh/badticke...
But I don't remember if the unary minus was allowed there or not.
The file was created on April 3, 2013, but this is unlikely to help.
UPD. habrahabr.ru/post/174715
Fortunately, she was in the "algorithms" hub.

V
vvovas, 2015-07-22
@vvovas

A little offtopic:
In the journal "Science and Life" for 1973 there was a problem to compose the numbers of the natural series using only the numbers 1,9,7,3 (only in this order) and the signs of the mat. actions.
For example: 0 = 1+9-7-3, 1 = -1*9+7+3 etc.
I think I got to 89..

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