結果
| 問題 |
No.2074 Product is Square ?
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-09-16 22:11:35 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,222 bytes |
| コンパイル時間 | 3,024 ms |
| コンパイル使用メモリ | 81,784 KB |
| 実行使用メモリ | 152,832 KB |
| 最終ジャッジ日時 | 2024-12-21 21:08:55 |
| 合計ジャッジ時間 | 33,660 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 27 WA * 1 TLE * 5 |
ソースコード
# https://qiita.com/Kiri8128/items/eca965fe86ea5f4cbb98
def gcd(a, b):
while b: a, b = b, a % b
return a
def isPrimeMR(n):
d = n - 1
d = d // (d & -d)
L = [2]
for a in L:
t = d
y = pow(a, t, n)
if y == 1: continue
while y != n - 1:
y = (y * y) % n
if y == 1 or t == n - 1: return 0
t <<= 1
return 1
def findFactorRho(n):
m = 1 << n.bit_length() // 8
for c in range(1, 99):
f = lambda x: (x * x + c) % n
y, r, q, g = 2, 1, 1, 1
while g == 1:
x = y
for i in range(r):
y = f(y)
k = 0
while k < r and g == 1:
ys = y
for i in range(min(m, r - k)):
y = f(y)
q = q * abs(x - y) % n
g = gcd(q, n)
k += m
r <<= 1
if g == n:
g = 1
while g == 1:
ys = f(ys)
g = gcd(abs(x - ys), n)
if g < n:
if isPrimeMR(g): return g
elif isPrimeMR(n // g): return n // g
return findFactorRho(g)
def primeFactor(n):
i = 2
ret = {}
rhoFlg = 0
while i*i <= n:
k = 0
while n % i == 0:
n //= i
k += 1
if k: ret[i] = k
i += 1 + i % 2
if i == 101 and n >= 2 ** 20:
while n > 1:
if isPrimeMR(n):
ret[n], n = 1, 1
else:
rhoFlg = 1
j = findFactorRho(n)
k = 0
while n % j == 0:
n //= j
k += 1
ret[j] = k
if n > 1: ret[n] = 1
if rhoFlg: ret = {x: ret[x] for x in sorted(ret)}
return ret
from collections import defaultdict
t = int(input())
for _ in range(t):
n = int(input())
a = list(map(int, input().split()))
d = defaultdict(int)
ans = "Yes"
for i in range(n):
f = primeFactor(a[i])
for x in f:
d[x] += f[x]
for x in d:
if d[x] % 2 == 1:
ans = "No"
print(ans)