結果
| 問題 |
No.2221 Set X
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-20 20:21:00 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,455 bytes |
| コンパイル時間 | 404 ms |
| コンパイル使用メモリ | 82,512 KB |
| 実行使用メモリ | 165,008 KB |
| 最終ジャッジ日時 | 2025-03-20 20:22:44 |
| 合計ジャッジ時間 | 8,705 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 2 WA * 38 |
ソースコード
def main():
import sys
input = sys.stdin.read().split()
N = int(input[0])
A = list(map(int, input[1:N+1]))
A = sorted(A) # Just in case, but input says it's already sorted
max_A = A[-1]
left = 1
right = max_A + 1 # Cover X up to max_A +1
def compute_f(X):
if X == 0:
return float('inf')
prev = A[0] // X
count = 1
for a in A[1:]:
current = a // X
if current != prev:
count += 1
prev = current
return (X + 1) * count
# Ternary search to narrow down the range
while right - left > 3:
mid1 = left + (right - left) // 3
mid2 = right - (right - left) // 3
f1 = compute_f(mid1)
f2 = compute_f(mid2)
if f1 < f2:
right = mid2
else:
left = mid1
# Check all possible X in [left, right] inclusive
min_f = float('inf')
best_x = None
for X in range(left, right + 1):
current_f = compute_f(X)
if current_f < min_f or (current_f == min_f and X < best_x):
min_f = current_f
best_x = X
# Also check higher values if needed. Because when X > max_A, all elements are 0 except A >= X
# Let's check X up to max_A +1 (included in initial range)
# So the loop above should suffice
print(best_x)
print(min_f)
if __name__ == "__main__":
main()
lam6er