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Problems

Brute force
Difficulty
Sort by
6
The vouchers
Easy
9
N-digit numbers
Easy
22
"Mirror prime" numbers
Easy
29
The level of palindrome
Very easy
50
The cut number
Easy
82
Catacombs
Medium
90
Gold, Food and Power
Medium
94
Primes’ Problem
Easy
122
Mountain routes
Very easy
128
Lucky tickets
Very easy
141
The minimal sum of digits
Very easy
146
Squares - 2
Very easy
163
Happy Numbers
Hard
169
Skyscrapers
Easy
176
Election of the Leader
Very easy
177
Poker
Very easy
192
Just Fibonacci
Very easy
194
Product of digits
Very easy
202
Cubes
Very easy
203
Cubes - 2
Very easy
205
First non-palindrome
Easy
212
Kopatych's Fence
Hard
215
Compote Preparation
Very easy
241
Swamp
Medium
242
Prime number
Easy
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