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Problems
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Difficulty
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9968
Sequence 5
9969
Sequence 6
Very easy
9970
Sum 1
9971
Sum 2
Very easy
9972
Sum 3
9973
Sum 4
9974
Sum 5
Very easy
9975
Sum 6
Very easy
9977
Sum 8
9988
Two-digit numbers 4
9992
Three-digit numbers 2
9998
Three-digit numbers 8
10025
How many residents
Easy
10032
Positive tests
Medium
10055
How many balanced ternary
Easy
10100
Pythagoras's Revenge
Easy
10145
Increasing sines
Very easy
10165
Function f(n)
Very easy
10168
Sum of inverse squares
Medium
10170
A * B + C
Very easy
10174
Maximize the Ratio
10214
Rats
Very easy
10230
Photo Scaling
Medium
10250
Trio
Very easy
10253
Nastya and Decryption
Very easy
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