This contest is the preliminary contest of '2017 FunctionCup'. Please join and practice the contest if you are not familiar to submit Interactive, Output-Only problems.
The preliminary contest and the main contest are operating independently. You cannot participate the main contest when you 'only' registered the preliminary contest.
Since all members should experience the contest environment, the preliminary contest is the 1-team 1-member contest.
To participate the main contest, register the main contest!