Problems from 2015 ICPC East-Central NA Regional Contest Practice Session

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A Towering Problem 3074 1513 49% 0.00 1526 1380 90% 2.1
Bottled-Up Feelings 2519 1042 41% 0.00 1005 901 90% 2.4
Mastering Mastermind 2223 968 44% 0.00 943 850 90% 2.6
Shuffling Along 988 480 49% 0.00 475 431 91% 2.6