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Problems
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Difficulty
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5223
Watson`s memory
Easy
5227
Task
Hard
5241
Quest
Medium
5324
Extended Euclid Algorithm
Very easy
5360
Astronomy
Hard
5412
Ginkgo Numbers
5609
Complex Root
Easy
5653
Factors
Very easy
5665
Strange Limit
Very easy
5669
Bishops on a Toral Board
Easy
5674
Fibonacci Period
Very hard
5730
YAPTCHA
Very easy
5827
Prime Gap
5884
Admission to Exam
Very easy
5945
Multiplication - 2
Hard
5968
Quadratic Irrationality Representation
5987
Homework
Hard
5992
The Riemann Hypothesis
Easy
6136
Sequence
6174
A+B
Medium
6201
Goldbach`s Conjecture
Very easy
6270
Kids in a Friendly Class
Very easy
6286
Mysterious equation
Easy
6302
Garland
Very easy
6316
Divisibility
Medium
1
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11
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14