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Discussion of Problem 1536. Delights of Pipe-weed

about test case 4.
Posted by Shen Yang 24 Nov 2016 11:33
Why number of digits of b is less than number of digits of a1 or a2,  and answer is not Impossible,  I output Impossible but WA. can we output leading zeroes??
Re: about test case 4.
Posted by Shen Yang 24 Nov 2016 11:43
oops seems you can remove all matches...
Re: about test case 4.
Posted by Shen Yang 24 Nov 2016 12:28
what's the result of test 4:

12+4456=579
4
anyone help?
Re: about test case 4.
Posted by Shen Yang 24 Nov 2016 12:35
I know  123+456=579,  it is a reading comprehension problem....