From IPVCE Ernesto Guevara, Preselección Nacional de Informática de Cuba
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⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⡀⠀⠀⠀⠀⠀⠘⠀⣷⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡀⠀⠀⠀⠙⢦⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⡼⠃⠀⠀⠀⠀⠀⣤⠀⢏⠀⠀⠀⠀⢠⣠⡆⠀⠀⣦⡀⠀⠳⡀⠀⠀⠀⠀⠑⢄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈
⠀⠀⠀⠀⠀⠀⠀⠀⠐⣇⡀⠀⠀⠀⠀⠀⠘⠂⢈⣦⠀⣀⡀⠈⣟⢷⣄⠀⠘⣷⣄⠀⠹⣆⠀⠀⠀⠀⠀⠙⢦⣀⠀⠀⠀⠀⠀⠀⠀⢤
⠀⠀⠀⠀⠐⣶⠦⠤⠴⠋⠁⠀⠀⠀⠀⡜⢷⣧⣸⣿⡀⡟⠹⡄⢹⠀⣹⣷⣤⡘⣄⠙⠲⢬⣿⣉⡉⠉⠉⠉⠉⢉⣥⣀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠈⠳⠤⢤⡀⠀⠀⠀⠀⠀⢹⡾⣿⠛⠉⣧⡇⠀⢱⣸⡔⢡⠏⠀⠉⢻⣦⣤⠀⠈⠹⣿⣂⡀⣠⠔⢉⡤⠾⡆⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⢀⡞⣧⠀⠀⢠⠈⣇⢀⣿⠃⠀⠀⠸⣿⣠⣼⣟⣠⣯⣴⡿⠷⣿⠟⠁⠀⠀⠀⠀⠀⣇⡇⠀⡿⠦⡀⣇⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⣾⡼⡇⠀⠀⠘⡇⣿⣿⣿⢦⣄⣧⠀⣯⣿⣼⣿⣿⠋⢿⣽⣶⡏⠀⠀⠀⠀⠀⠀⠀⢻⠇⢀⡇⣠⠇⢸⡄⠀⠀⠀⣠
⠀⠀⠀⠀⠀⠀⠀⠙⠓⠳⣤⣶⠀⣿⠛⣿⢻⣷⣮⣽⡆⠈⠿⠟⠻⠛⠉⠉⠋⠉⠀⠀⠀⠀⠀⠀⠀⠀⠙⠀⠘⢿⠃⠀⣼⠁⠀⠀⠀⡱
⠀⠀⠀⠀⠀⠀⠀⢀⣠⡴⣺⣿⢠⣍⡀⠘⡿⢿⡿⠿⣷⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⡈⢀⡾⠃⠀⠀⠀⠘⢄
⠀⠀⠀⠀⠀⠀⠀⠀⠉⠉⠁⢸⡟⣾⡷⣄⢹⠀⠀⠀⣿⠁⣀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡏⡏⠉⠀⠀⠀⠀⠀⡐⠪
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠃⠈⠃⠀⠙⣇⠀⠀⠙⠦⠉⠉⠁⠀⠀⠀⠀⠀⢠⡆⠀⠀⠀⠀⠀⠀⠀⢸⠃⠹⡄⠀⠀⠀⠀⠀⠠⡀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⣆⠀⠀⢠⣤⣤⡤⢒⣊⣩⣽⣿⣿⠀⠀⠀⠀⠀⠀⠀⠀⢸⡄⠀⠙⣿⠀⡄⠀⠀⠀⠙
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⢦⠀⠈⠹⣶⠛⣩⠔⠋⠉⠁⣸⠀⠀⠀⠀⠀⠀⠀⣠⢞⡁⠀⠀⡞⣸⠃⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠳⣄⠀⠈⣿⣇⣀⣀⣀⢴⡿⠀⠀⠀⠀⠀⣠⠞⠁⣸⠀⢀⡼⠟⠹⡀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠳⡄⠙⠲⠤⠥⢖⡋⠀⠀⠀⠀⡠⠊⠁⠀⢠⠇⠀⠀⠀⠀⠀⢹⣉⡉⢰⡎
⠀⣀⣤⠖⠒⢲⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⣆⠀⠛⠋⠉⠀⠀⢀⡤⠊⠀⠀⠀⠀⠞⠀⠀⠀⠀⠀⠀⠀⢳⡼⠋⠀
⠋⡝⠁⠀⠀⠀⢱⡀⢀⡴⠊⠉⠉⠙⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀⢘⣄⣀⣀⣀⡤⠖⠋⠀⠀⠀⠀⠀⠀⠀⠀⣀⣀⠤⠤⠖⠊⢁⡠⠖⠋
⠉⠉⠉⠉⠙⡆⠀⢷⠋⠀⠀⢀⡴⠚⠁⠀⠀⠀⠀⠀⠀⣠⠴⣚⠭⠜⠛⢯⠀⡇⠀⠀⣀⣀⠤⠄⠒⠒⠉⠉⠀⣀⣀⠤⠔⠊⠁⠀⠀⠀
⠳⠄⠀⠀⠀⡇⢀⡼⢦⡀⣰⠋⠀⠀⠀⠀⠀⠀⠀⠀⢸⣏⣛⠓⠤⠤⡀⠘⡆⢇⣠⠞⢁⣠⠤⠤⠖⠒⠒⠉⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠈⠀⠀⠀⡟⠋⠀⠀⣹⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⡈⠉⠙⠢⡝⡄⠳⡼⠃⡴⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⢀⠀⢀⡴⠃⠀⠀⡸⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠇⠀⠀⠀⠙⢸⡞⢠⠞⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⣻⠒⠋⠀⠀⠀⡰⠃⠀⠀⠀⠀⠀⠀⠀⣀⣀⠠⠤⠤⠼⡀⠀⠀⠀⠀⡞⢠⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠘⠁⠀⠀⠀⠀⡰⠁⠀⠀⢀⣠⠄⠒⠊⠉⠀⠀⠀⠀⠀⠀⠈⢢⡀⠀⢰⢡⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⢀⣼⣁⠤⠖⠊⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⣽⣴⡾⠟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⢀⣠⠞⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣼⡟⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀