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   Problem Detail  
Problem Name: CountExpressions
Used In: SRM 398
Used As: Division I Level One , Division II Level Two
Categories: Brute Force, Simple Math
Writer: boba5551
Testers: PabloGilberto , legakis , Olexiy , ivan_metelsky
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Division I Division II
Point Value 250 500
Competitors 559 721
Opens 558 697
Percent Open 99.82% 96.67%
Percent Submitted 98.21% 67.72%
Overall Accuracy 94.45% 59.50%

Division I
Java C++ C# VB Python Overall
Problems Submitted 66 456 26 0 0 548
Problems Correct 65 438 25 0 0 528
Submission Accuracy 98.48% 96.05% 96.15% 0.00 0.00 96.35%
Problems Failed by Challenge 0 5 0 0 0 5
Problems Failed by System Test 1 13 1 0 0 15
Challenge Attempts Made 1 20 1 0 0 22
Challenge Accuracy 0.00% 25.00% 0.00% 0.00 0.00 22.73%
Best Time 0:03:57.592 0:02:56.691 0:06:24.152 0:02:56.691
Fastest Petr Eryx Larry Eryx
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Average Correct Time 0:15:41.137 0:13:17.432 0:15:00.633 0:13:40.10

Division II
Java C++ C# VB Python Overall
Problems Submitted 109 330 31 2 0 472
Problems Correct 103 295 29 2 0 429
Submission Accuracy 94.50% 89.39% 93.55% 100.00% 0.00 90.89%
Problems Failed by Challenge 1 7 0 0 0 8
Problems Failed by System Test 5 28 2 0 0 35
Challenge Attempts Made 6 34 2 0 0 42
Challenge Accuracy 16.67% 20.59% 0.00% 0.00% 0.00 19.05%
Best Time 0:08:01.512 0:03:50.272 0:09:29.131 0:16:53.234 0:03:50.272
High Scorer skepsis ILoveWangYeMore NemanjaT jh1221 ILoveWangYeMore
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Average Correct Time 0:30:30.348 0:25:51.36 0:26:43.979 0:18:06.876 0:26:59.512