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Problems

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Difficulty
Sort by
2218
Coins
Very easy
2231
The Vanishing
Easy
2238
Who will get the "avtomat"?
Very easy
2239
Masha and the Candies
Very easy
2281
To Add or to Multiply
Very easy
2293
March 8
Very easy
2295
How to Make Money
Very easy
2328
Degree numbers
Easy
2334
Mad Tea Party
Very easy
2338
Partition of a number
Medium
2339
NSC
Hard
2340
Network
Easy
2349
Races
Easy
2360
Numbering of Fractions
Very easy
2361
Yami
Medium
2364
Clock
Very easy
2370
Automated Telephone Exchange
Very easy
2385
The number of permutations
Easy
2394
Number
Medium
2395
Semiperfect number
Medium
2400
Triangles
Very easy
2417
Multiplication
Very easy
2421
Fibonacci numbers
Easy
2423
Divisibility by 4
Easy
2424
The desired quantity
Very easy
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