Solution

161408

First name
ByungJoon
School
British International school HCMC
Age
0

My strategy is to make "the computer's turn" be at 10:45 first.
If the computer approach 10:45, the computer has to choose one of 15mins, 30mins, 45mins, 60mins. After thenã…£ will choose 60mins, 45mins, 30mins, 15mins, and I can always win.