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Python 2022-02-25 20:05:04
kitty's calculations on a tree hackerrank solution
from collections import Counter, defaultdict MOD = 10**9 + 7 def read_row(): return (int(x) for x in input().split()) def mul(x, y): return (x * y) % MOD def add(*args): return sum(args) % MOD def sub(x, y): return (x - y) % MOD n, q... Add solution
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