結果
| 問題 |
No.577 Prime Powerful Numbers
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 21:18:26 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,560 bytes |
| コンパイル時間 | 220 ms |
| コンパイル使用メモリ | 82,272 KB |
| 実行使用メモリ | 93,308 KB |
| 最終ジャッジ日時 | 2025-06-12 21:18:46 |
| 合計ジャッジ時間 | 6,596 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | -- * 1 |
| other | TLE * 1 -- * 9 |
ソースコード
import math
def is_prime(n):
if n <= 1:
return False
elif n <= 3:
return True
elif n % 2 == 0:
return False
s = 0
d = n - 1
while d % 2 == 0:
d //= 2
s += 1
bases = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37]
for a in bases:
if a >= n:
continue
x = pow(a, d, n)
if x == 1 or x == n - 1:
continue
for _ in range(s - 1):
x = pow(x, 2, n)
if x == n - 1:
break
else:
return False
return True
def integer_nth_root(x, n):
if x == 0:
return 0
low = 1
high = x
while low <= high:
mid = (low + high) // 2
power = 1
overflow = False
for _ in range(n):
power *= mid
if power > x:
overflow = True
break
if overflow:
high = mid - 1
elif power < x:
low = mid + 1
else:
return mid
return -1
def is_prime_power(x):
if x < 2:
return False
if is_prime(x):
return True
max_b = int(math.log2(x)) + 1
for b in range(2, max_b + 1):
root = integer_nth_root(x, b)
if root == -1:
continue
if root ** b == x:
if is_prime(root):
return True
return False
def solve():
import sys
input = sys.stdin.read
data = input().split()
Q = int(data[0])
for i in range(1, Q + 1):
N = int(data[i])
found = False
max_a = 60
for a in range(2, max_a + 1):
max_p = int(N ** (1.0 / a))
if max_p < 2:
continue
for p in range(2, max_p + 1):
if is_prime(p):
pa = p ** a
if pa >= N:
continue
rem = N - pa
if rem < 2:
continue
if is_prime_power(rem):
found = True
break
if found:
break
if found:
break
if found:
print("Yes")
continue
if N % 2 == 0:
if N >= 4:
print("Yes")
else:
print("No")
else:
if N >= 5 and is_prime(N - 2):
print("Yes")
else:
print("No")
if __name__ == "__main__":
solve()
gew1fw