Warning: session_start(): open(/tmp/sess_a3ee8a60611202e9339a1ec24c04e025, 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

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
======2019-2020 ACM-ICPC Latin America Regional Contest====== 链接：https://codeforces.com/gym/102428/ 第一次做ICPC区域赛的题，只做出四题 被血虐，意识到自己还有好多知识点不会，赶紧学。