結果
| 問題 | No.2220 Range Insert & Point Mex |
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-31 17:31:00 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,018 bytes |
| 記録 | |
| コンパイル時間 | 149 ms |
| コンパイル使用メモリ | 82,292 KB |
| 実行使用メモリ | 173,404 KB |
| 最終ジャッジ日時 | 2025-03-31 17:32:13 |
| 合計ジャッジ時間 | 20,872 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 35 TLE * 1 |
ソースコード
import sys
from collections import defaultdict
def main():
input = sys.stdin.read
data = input().split()
ptr = 0
N = int(data[ptr])
ptr += 1
events = []
for _ in range(N):
l = int(data[ptr])
r = int(data[ptr+1])
a = int(data[ptr+2])
ptr +=3
# Add event (pos, type, a) : type 1 for add, 0 for remove
events.append((l, 1, a))
events.append((r+1, 0, a))
# Sort the events: first by pos, then by type (0 comes before 1)
events.sort(key=lambda x: (x[0], x[1]))
Q = int(data[ptr])
ptr +=1
x_list = list(map(int, data[ptr:ptr+Q]))
ptr += Q
active_a = defaultdict(int)
current_set = set()
mex_candidate = 0
event_idx = 0
result = []
for x in x_list:
# Process all events with pos <= x
while event_idx < len(events) and events[event_idx][0] <= x:
pos, typ, a = events[event_idx]
if typ == 0:
# Remove event
active_a[a] -= 1
if active_a[a] == 0:
if a in current_set:
current_set.remove(a)
# Update mex_candidate if needed
if a < mex_candidate:
mex_candidate = min(mex_candidate, a)
else:
# Add event
active_a[a] += 1
if active_a[a] == 1:
current_set.add(a)
# Update mex_candidate if a is the current candidate
if a == mex_candidate:
while mex_candidate in current_set:
mex_candidate +=1
event_idx +=1
# Compute mex from current candidate
m = mex_candidate
while m in current_set:
m +=1
result.append(m)
mex_candidate = m # Update candidate for next query
for num in result:
print(num)
if __name__ == "__main__":
main()
lam6er