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Problems

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Difficulty
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1983
Ricefield
Very easy
1985
Primes Anna
Medium
1987
The Next Permutation
Very easy
2011
Mutation
Medium
2014
Lucky Number
Very easy
2036
Age
Easy
2042
Monthly and quarterly
2043
Quarter
2044
Month
2046
y =| cos(2x)|
Medium
2047
Almost Union-Find
Medium
2048
Broken Keyboard (a.k.a. Beiju Text)
Very easy
2049
Cake Cutting
Very hard
2051
Easy Problem from Rujia Liu?
2052
Fast Matrix Operations
Very easy
2061
Young Programmers
Easy
2063
Vasya's arithmetic
Easy
2064
Vasya's Arithmetic 2
Easy
2068
Smart dog
Easy
2072
Ancient Scroll Restoration
Medium
2080
Include directives
2091
Club "Binary Cat"
Very easy
2097
Three-digit numbers
Very easy
2098
Invertor
2099
Two arrays
Easy
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