[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/auth/provider/godb.php on line 137: Undefined array key "PHPSESSID" [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4129: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3008) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4129: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3008) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4129: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3008) [phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4129: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3008) Rating - goproblems.com
Rating changes only on your first attempt on a problem. If you solve it goes up, if you fail it goes down.
When you try a problem with rating much lower than yours you wont get anything from solving it.