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Posted by wk at 2009-08-23 13:17:58 on Problem 3740

Could You explain 2nd test example? For example first, second and last rows in the matrix : 
first; 0 0 0 1
SECOND: 1 0 0 0
last: 0 1 0 0
satisfies task condition: "could You find some rows". Why the answer is "impossible"?

Followed by:

Re:A (289) Geniuswj 2009-08-23 13:25:29
Re:A (279) calme 2009-08-23 13:26:05

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