結果
| 問題 |
No.577 Prime Powerful Numbers
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-15 23:39:44 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,410 bytes |
| コンパイル時間 | 291 ms |
| コンパイル使用メモリ | 82,264 KB |
| 実行使用メモリ | 144,648 KB |
| 最終ジャッジ日時 | 2025-04-15 23:41:28 |
| 合計ジャッジ時間 | 6,663 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 sieve(limit):
sieve = [True] * (limit + 1)
sieve[0] = sieve[1] = False
for i in range(2, int(math.isqrt(limit)) + 1):
if sieve[i]:
sieve[i*i : limit+1 : i] = [False] * len(sieve[i*i : limit+1 : i])
primes = [i for i, is_p in enumerate(sieve) if is_p]
return primes
def is_prime(n):
if n <= 1:
return False
elif n <= 3:
return True
elif n % 2 == 0:
return False
d = n - 1
s = 0
while d % 2 == 0:
d //= 2
s += 1
for a in [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37]:
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 is_prime_power(m):
if m < 2:
return False
if is_prime(m):
return True
max_b = m.bit_length()
for b in range(max_b, 1, -1):
low = 2
high = int(m ** (1 / b)) + 2
while low <= high:
mid = (low + high) // 2
power = 1
overflow = False
for _ in range(b):
power *= mid
if power > m:
overflow = True
break
if overflow:
high = mid - 1
continue
if power < m:
low = mid + 1
elif power > m:
high = mid - 1
else:
if is_prime(mid):
return True
else:
break
return False
primes_1e5 = sieve(10**5)
small_primes = sieve(10**6)
prime_powers_1e6 = set()
for p in small_primes:
a = 1
current = p
while current <= 1e6:
prime_powers_1e6.add(current)
a += 1
current = p ** a
if current > 1e6:
break
def solve():
import sys
input = sys.stdin.read().split()
Q = int(input[0])
cases = list(map(int, input[1:Q+1]))
for N in cases:
found = False
a = 1
while True:
x = 2 ** a
if x >= N:
break
y = N - x
if y < 2:
a += 1
continue
if is_prime_power(y):
found = True
break
a += 1
if found:
print("Yes")
continue
for p in primes_1e5:
if p == 2:
continue
a = 1
current = p
while current <= N:
x = current
y = N - x
if y < 2:
break
if is_prime_power(y):
found = True
break
a += 1
current *= p
if current > N:
break
if found:
break
if found:
print("Yes")
continue
for y in prime_powers_1e6:
if y >= N:
continue
x = N - y
if x < 2:
continue
if is_prime_power(x):
found = True
break
if found:
print("Yes")
continue
print("No")
solve()
lam6er