Welcome again challenger!! Our Young Mario was dreaming about Xors when he was struck with a question. Help him solve his question. 139.59.28.4:1352 Let’s connect to the server and see what’s going on.

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$ nc 139.59.28.4 1352 Question: Given x , we need to find the numbers less than x such that (p xor x) > x where 1<=p<x Constrict time as much as possible as the solution given here takes (t * log n) time , where t is the number of test cases. Input Format: Line 1 : No of test cases (t) Next t lines are the values of x Output Format: Single line stating the count of numbers where than p xor x > x 12587 91427 |

So, we need to find the… Continue Reading →

nc misc.chal.csaw.io 4239 Let’s connect to the server and see what’s going on.

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$ nc misc.chal.csaw.io 4239 8-1-1 even parity. Respond with '1' if you got the byte, '0' to retransmit. 00110001001 1 00110010001 0 00110010001 |

It seems the server wants to send us some data. It offers 8-1-1 even parity to prevent us from getting the data incorretly. We will use… Continue Reading →

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