Problems #2022-CKsim

# Name
TopCoder AC Ratio (user) AC (submission)
2287 66.7% (6/9) 35.3% (12/34)
2288 36.0% (9/25) 18.2% (30/165)
2289 98.0% (48/49) 54.6% (77/141)
2290 88.0% (22/25) 27.7% (39/141)
2291 85.7% (6/7) 68.8% (11/16)