GRID GAME and xor trick

Правка en1, от wineColoredDays, 2015-12-03 09:09:01

I was unable to solve the problem GRID GAME ( GRID GAME ) during the recently conducted ICPC Preparatory Series by team Enigma . The reason being i couldn't write the correct code to check whether the xor of the series x, x+2, x+4, ..., x+2*m-2 is 0 or not . But, after the contest i saw several different approaches to the problem . Some of them involved just 5-10 lines of code whereas some involved 20-30 lines of code . I'm very interested in knowing your approach . Thanks in advance for sharing :)

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en1 Английский wineColoredDays 2015-12-03 09:09:01 578 Initial revision (published)