Warning: session_start(): open(/tmp/sess_6a2a5516f9a23705aa8acb7314382420, O_RDWR) failed: No space left on device (28) in /data/wiki/inc/init.php on line 239

Warning: session_start(): Failed to read session data: files (path: ) in /data/wiki/inc/init.php on line 239

Warning: Cannot modify header information - headers already sent by (output started at /data/wiki/inc/init.php:239) in /data/wiki/inc/auth.php on line 430

Warning: Cannot modify header information - headers already sent by (output started at /data/wiki/inc/init.php:239) in /data/wiki/inc/Action/Export.php on line 103

Warning: Cannot modify header information - headers already sent by (output started at /data/wiki/inc/init.php:239) in /data/wiki/inc/Action/Export.php on line 103
2022-2023:teams:fire_and_blood:my

惨痛教训

记得看数据范围，从 MAXN 到 long long 都要注意，在提交前确认一遍后再提交。

边界情况一定要动笔写清各种定义，避免混乱导致的边界错误。

勇于打表。

在赛场上不能犯懒，有稳妥解法就不要铤而走险去省事儿。

尽量少看通过率极低的题目。

即使是 Python 也存在相当的浮点精度误差，在大整数进行诸如 sqrt 等操作时可能会出现大于 1 的误差，一定要进行修正，或直接采用二分进行实现。