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Problems
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Difficulty
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6613
Fractional Lotion
Very easy
6623
One Move from Towers of Hanoi
Very easy
6625
Light Switches
Easy
6655
Xenospeak
Hard
6746
X + R(X) = N
Hard
6775
Captain Obvious and Rabbit-Man: The Riddle
Easy
6781
Clock Hands
Hard
6833
Galactic Warlords
Hard
6844
A DP Problem
Medium
6861
Supersquare
Very hard
6880
Works
Easy
6920
Lexicographical ranking
Hard
6927
Account Book
Very easy
6936
Square Free Numbers
Very easy
6944
Counting Lattice Squares
Hard
6949
Traveling Fool
Very hard
6953
Unlock my safe
Very easy
6961
Assignments
Very easy
6982
Spellcasting
Easy
7017
Exponential Towers
Very easy
7048
Numbers
Medium
7051
Symmetrical Patterns
Medium
7079
Let it Bead
Medium
7094
Chess
Medium
7095
Factorials
Easy
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