Submission #1086413

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1086413	2024-09-10 14:27:13	shikgom2	씽크스몰 (kriii3_TT)	Pypy 3	20 / 30	1129 ms	167368 KiB

tt

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import sys
input = sys.stdin.readline
import cmath
def fft(a, inv):
    n = len(a)
    j = 0
    for i in range(1, n):
        bit = n >> 1
        while j >= bit:
            j -= bit
            bit >>= 1
        j += bit
        if i < j:
            a[i], a[j] = a[j], a[i]
    length = 2
    while length <= n:
        w = [cmath.exp(2j * cmath.pi * i / length * (-1 if inv else 1)) for i in range(length >> 1)]
        for i in range(0, n, length):
            for j in range(length >> 1):
                u = a[i + j]
                v = a[i + j + length // 2] * w[j]
                a[i + j] = u + v
                a[i + j + length // 2] = u - v
        length <<= 1
    if inv:
        for i in range(n):
            a[i] /= n
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10