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Thank you, for the answer! So I will try to concentrate more on linear math. but I also have another question, How do you think, will Quantum Computing replace Classical Programming?

WTF? Do You Even Know Me? Is Everything OK to you?

Problem C,Div2 Garland:

test:
8
2 0 4 0 6 0 7 0

answer on this test is 1 according to accepted solutions: 68650401 , 68385020 , 69983917 , but I don't know which permutation gives us this result?

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