Effective immediately, programs may print to standard error and it will not affect the verdict (unless you get Output Limit Exceeded, haha). If your program prints to standard error, it will be shown in the submission details (a limited number of characters, anyway).

Effective immediately, programs may print to standard error and it will not affect the verdict (unless you get Output Limit Exceeded, haha). If your program prints to standard error, it will be shown in the submission details (a limited number of characters, anyway).