Welcome to Weekly Contest 188! Feel free to share and post your contest experience here!

You can also view the rankings for the contest here.

Links to the individual problems are included below:

Build an Array With Stack Operations (3 points)

Count Triplets That Can Form Two Arrays of Equal XOR (4 points)

Minimum Time to Collect All Apples in a Tree (5 points)

Number of Ways of Cutting a Pizza (7 points)