Educational project (Arthur Timoshin)
Verification
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Please demonstrate that you are human, not a spider or robot

 ______  __    __   _  _     ___   _____   ____   _  _   
|  ____|/_ |  / /  | || |   / _ \ |  __ \ |___ \ | || |  
| |__    | | / /_  | || |_ | | | || |  | |  __) || || |_ 
|  __|   | || '_ \ |__   _|| | | || |  | | |__ < |__   _|
| |      | || (_) |   | |  | |_| || |__| | ___) |   | |  
|_|      |_| \___/    |_|   \___/ |_____/ |____/    |_|  

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