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Problems

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Difficulty
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5986
Democracy
5987
Homework
Hard
5988
Fibonacci haters` nim 3. Return of Peter
Medium
5989
Hippodrome
Very hard
5990
Contemporary Art
Medium
5991
Palindromes 100500
Easy
5992
The Riemann Hypothesis
Easy
6002
Are We There Yet?
6003
Fast Times at Ridgemont`s Planet
6004
Symbolic Mathematics
6005
Gray Code
Very easy
6006
Change by Mass
Very easy
6007
Relative Paths
6008
Inverse Triangular Numbers
6009
I`ll Be Round About
Very hard
6010
Jill and Phil`s Palindromic Peregrinations
6011
Pavement Signage
Very hard
6012
Time Limit Exceeded
6013
Counting Again?
Easy
6014
Coin Turning Game
Easy
6015
Solitaire
6016
Matrix
Very easy
6017
Largest inscribed rectangle
Very easy
6018
XOR Sum
Very easy
6019
There is no place like 127.0.0.1
Hard
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