Interesting Xor || IRSTXOR || Full Solution With Code in C++ || Codechef Long Challenge 2021
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Interesting Xor !
C less than symbol pow(2,d)
A^B = C
find Max Of A*B
Hello Guys
Today i am solving interesting xor problum of march long challenege 2021
so in this question we must required knowledge of xor properties as bellow
0 XOR 0 = 0
0 XOR 1 = 1
1 XOR 0 = 1
1 XOR 1 = 0
so to solve this question first count the no. of bit in given input C
then set one varible as max no. made with this size of bit-1 bit
so our A = pow(2,no. of bit in C - 1)
then to find B we use properties
as A XOR B = C
xoring both the side A
it give us
A XOR A XOR B = A XOR C
here
A XOR A = 0
so put in above equation give us
0 XOR B = A XOR C
and with halp of table any No.'s XOR with 0 give that no. as it is
so B = A XOR C
then multiply A&B and print the ans.
Input :
2
13
10
Output
70
91
EXTRA TEST CASE
2
31
100
ANS
240
5733
so this is ans we required
submit it
it will give 100 point full point
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KEEP CODING
HAPPY CODING :)))))))