Tentative Kaggle Leaderboard Cut-Off Score
A - 0.63
B - 0.57
C - 0.51
D - 0.25
(Note1: Cut-off score is subject to change.)

(Note2: The score is based on private leaderboard, which will be released after competition deadline.)

(Note3: Try not to overfit the scores on public leaderboard, since it only contains 30% of the test set.)
Grading
These numeric grades are upper bounds, the actual score will be interpolated based on your ranking of private leaderboard.
A+: 105/100, Upper bound for top ranking of private leaderboard.
A:   100/100, Upper bound for passing cut-off score for A.
B:    80/100, Upper bound for passing cut-off score for B.
C:    60/100, Upper bound for passing cut-off score for C.
D:    40/100, Upper bound for passing cut-off score for D.