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Problem: Given an array a1, a2, ..., an (1 <= n <= 1e6) and q queries, for each query has two types.
1 l r x: a[i] = min(a[i], x) (l <= i <= r).
2 i : print value in position i.
I dont know use lazy update to solve operator 1, help me pls (sorry i'm poor E).
hi everyone!
I read a blog write about formula of a^b = a'b + ab' and i dont understand. Someone can explain it for me pls :((
(sorry i'm poor E).
link: https://www.homeworklib.com/qaa/1383353/2prove-that-a-xor-b-a-xor-c-a-xor-b-b-xor
