JOIN
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   Problem Detail  
Problem Name: Undo
Used In: SRM 419
Used As: Division I Level One , Division II Level Two
Categories: Simulation, String Manipulation, String Parsing
Writer: andrewzta
Testers: PabloGilberto , Olexiy , marek.cygan , ivan_metelsky
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Division I Division II
Point Value 250 500
Competitors 419 555
Opens 418 543
Percent Open 99.76% 97.84%
Percent Submitted 99.04% 64.09%
Overall Accuracy 78.52% 26.67%

Division I
Java C++ C# VB Python Overall
Problems Submitted 60 334 20 0 0 414
Problems Correct 49 267 13 0 0 329
Submission Accuracy 81.67% 79.94% 65.00% 0.00 0.00 79.47%
Problems Failed by Challenge 4 28 3 0 0 35
Problems Failed by System Test 7 39 4 0 0 50
Challenge Attempts Made 18 78 5 0 0 101
Challenge Accuracy 22.22% 35.90% 60.00% 0.00 0.00 34.65%
Best Time 0:03:39.575 0:03:26.877 0:05:27.997 0:03:26.877
Fastest UdH-WiNGeR JongMan Larry JongMan
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Average Correct Time 0:17:08.286 0:16:15.736 0:17:53.896 0:16:27.441

Division II
Java C++ C# VB Python Overall
Problems Submitted 93 219 32 4 0 348
Problems Correct 29 100 18 1 0 148
Submission Accuracy 31.18% 45.66% 56.25% 25.00% 0.00 42.53%
Problems Failed by Challenge 21 37 4 1 0 63
Problems Failed by System Test 43 82 10 2 0 137
Challenge Attempts Made 49 115 14 1 0 179
Challenge Accuracy 42.86% 32.17% 28.57% 100.00% 0.00 35.20%
Best Time 0:09:52.332 0:06:19.289 0:08:20.253 0:19:04.852 0:06:19.289
High Scorer rator10 garfi Biskup jh1221 garfi
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Average Correct Time 0:29:39.839 0:27:00.886 0:28:05.477 0:19:04.852 0:27:36.671