This situation, might appear after the solution of "Slight aji difference". (Thanks to tails, bass, Condor and Anion for the corrections!)
Author santa c
Difficulty 2 kyu (history)
AVG solve time 54 sec
User attempts 1155 / 4575
Genre life and death
Similar problems
Created 2003-11-29
Source Problem 3424.
Stars 2.82  (11 votes)
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Your attempts N/A