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Roman_Derkach
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Punch card
Problems
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Роман Деркач
Last visit 4 days ago
Ukraine, Котельва
Joined September, 2012
Rank
20
Solved problems
2194
Submissions
6633
Accepted submits
2530
Recently submitted problems
1605
Second digit of the number
7117 / 8085
10168
Sum of inverse squares
75 / 151
10379
Maximum Frequency Stack
149 / 216
10608
Stack push / pop
304 / 342
10762
Soldiers Row
248 / 270
11287
Peak Element
115 / 127
11290
Card game
274 / 288
11312
Expression
37 / 58