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Educational Round 1

Welcome to SeriousOJ Educational Round 1.

Please click on attend contest to confirm registration.
Note : The problems are sorted in ascending order of difficulty.
Codeforces announcement blog : Announcement

Problem

Problem
#1: P1210 A. Smallest Permutation
#2: P1209 B. Rearrange the String
#3: P1208 C. Game on Integer
#4: P1206 D1. GCD equal Absolute Value (Easy Version)
#5: P1207 D2. GCD equal Absolute Value (Hard Version)
#6: P1205 E. Make Cycle in Tree
Status
Done
Rule
ACM/ICPC
Problem
6
Start at
2025-07-14 15:30
End at
2025-07-14 18:00
Duration
2.5 hour(s)
Host
Partic.
127
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