The metrics in the leaderboard of task 2 & 3 seems strange

ESCI Challenge for Improving Product Search
#1

There are two metrics in the leaderboard of task 2& 3, f1 score and accuracy. Surprisingly, their values are the same. I think that f1 score doesn’t work, only the accuracy is given. Am I correct?

F1 Score for ranking task 2 and 3
#2

In multi-class, micro f1 == accuracy
And， I hope the ref url will help.

REF: