Thông tin
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⣶⣿⣿⣿⣷⣦⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⣿⣿⠟⠛⢻⡑⣓⡋⢢⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣱⣼⣿⡆⡝⢿⣿⠼⣆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⣿⣯⣷⡤⢿⣠⡿⠤⠞⢦⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣟⢟⡤⠴⠋⠀⠀⠀⠈⠓⠢⢄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⡠⠤⠤⢄⣀⡀⢀⠴⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠓⢦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠞⠁⠀⠀⠀⠀⠀⠀⠈⡗⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠣⡜⢦⣀⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠃⠀⠀⠀⠀⠀⠀⠀⠀⡸⠀⠀⠀⠀⠲⣄⠀⠀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠈⢾⡇⠀⠀⠉⠙⠢⡀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⣞⠀⡠⠔⠂⠀⠀⢤⢖⡾⠃⠀⡆⠀⠀⠀⠹⣆⠀⠀⠀⠈⡆⠀⠀⠀⠀⠀⠀⡘⣇⠀⠀⠀⠀⠀⠙⡄⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡞⠀⠀⢀⡠⣖⠵⠊⠀⠀⢠⠇⠀⠀⠀⠀⣿⡄⠀⠀⠀⣿⠀⠀⠀⠀⠀⡆⠑⢾⣽⠆⠀⠀⠠⡀⣳⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣁⣂⣭⠔⠚⠁⠀⠀⠀⢠⠏⠀⠀⠀⠀⢀⣿⣿⠀⠀⠀⣿⡇⠀⠀⠀⠀⠸⡄⠀⠙⠢⣄⠀⠀⢸⣏⠀⠀⠀ ⠀⠀⠀⠀⠀⣀⣴⡾⠟⠛⠉⠀⠀⣀⣠⠔⠂⢀⡴⠃⠀⠀⠀⠀⠀⣾⣿⣿⣷⣤⣼⣿⣿⣆⠀⡄⠀⠀⠹⡄⠀⠀⠀⠙⠒⠡⢼⡀⠀⠀ ⠀⠀⠀⢀⣼⣿⣭⣴⣶⣶⣾⡟⠉⠁⠀⣀⠴⠋⠀⠀⠀⠀⠀⣠⣾⣿⣿⣿⠟⠋⢁⠏⠉⠻⣾⣿⣄⠀⠀⠙⠦⠀⠀⠀⠀⠀⠀⠈⢢⡀ ⠀⠀⠀⣾⣿⣿⠻⠩⠍⣻⢿⣷⣶⣶⣾⣿⣦⣄⣀⣀⣠⣴⣾⣿⣿⠿⢋⡠⠤⣦⡷⠂⢐⠲⠬⢉⡻⣷⡄⠀⠀⠀⣀⢤⣤⢴⡶⡤⣀⢳ ⠀⠀⠠⢋⠞⠘⢆⠀⠀⢹⠒⠒⢌⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣟⡭⠤⢏⠤⠭⣏⣠⣴⣨⡶⠂⠈⠁⠀⢹⣷⢦⠞⠁⠈⢯⠟⣰⡇⠈⢾ ⠀⠀⠀⡜⠀⠀⠀⠑⢤⡀⠀⠀⠀⢩⠟⠛⠛⠛⠛⢟⡻⠏⠈⠈⠙⠒⠦⣀⠀⣇⠀⠀⢀⣧⣀⣀⠀⠀⢸⣿⣆⠀⠀⠀⠀⡰⠃⣧⠀⠘ ⠀⠀⢀⠃⠀⠀⠀⠀⢀⣨⠝⠒⠚⠉⠉⠉⠉⠙⡲⠋⠀⠀⠀⠀⠀⠀⠀⠈⠻⣿⡶⠚⠁⠀⠀⠀⠈⠙⠢⣿⢧⣕⣢⣤⣾⣴⡿⠃⠀⠀ ⠀⢀⠎⠀⠀⠀⣠⠞⠉⠀⠀⠀⠀⠀⠀⠀⠀⠐⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⣇⠀⠀⠀⠀⠀⠀⠀⠀⠈⢣⡀⠈⠛⢿⠋⠀⠀⠀⠀ ⢠⠏⠀⠀⣠⠞⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⣇⠀⠀⠀⠳⡀⠀⠀⠀ ⢸⣷⡶⠞⠁⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠀⠀⢀⣼⢳⠀⠀⠀ ⠘⣿⠀⠀⠀⠻⠦⢤⣤⣀⣀⣀⣀⣀⣀⡀⠀⠀⠀⢸⣧⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣶⣾⣿⠟⠈⡇⠀⠀ ⠀⠈⣆⠀⠀⠀⠀⠀⣠⠋⠉⠉⠙⠻⣿⣿⣿⣷⣄⠀⠻⡆⠀⠀⠀⠀⠀⠀⢀⣴⣿⠇⠀⠀⠀⠀⠀⠀⠀⠀⢀⣎⠝⠛⣇⠀⡴⠃⠀⠀ ⠀⠀⠙⣦⣿⡀⠀⢠⠃⠀⠀⠀⠀⠀⠀⠙⠪⣛⢿⣷⣤⣀⠀⠀⢀⣀⣠⣶⣿⣿⣿⣧⣀⡀⠀⠀⠀⢀⣀⣴⡾⠋⠀⠀⡸⠟⠀⠀⠀⠀ ⠀⠀⠀⠀⠉⠻⣦⣿⣀⡀⠀⠀⠀⠀⠀⠀⢀⢈⡑⠬⣛⠿⣿⣿⣿⣿⠿⠟⠉⠈⢻⣿⣿⣿⣿⣿⣿⣿⡿⠛⠁⢀⠴⠊⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠈⠙⠒⠤⠤⠤⠀⠀⠀⠀⠸⢾⡇⠀⠀⠉⢢⡠⠤⠙⡀⠀⠀⢠⠋⠀⠉⠻⡭⠽⠓⢸⣀⠤⠊⠁⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⡇⠀⠀⡰⠋⠀⠀⢠⠁⠀⠀⠸⡀⠀⠀⠀⠸⡄⠀⠹⡅⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡅⠀⢰⠃⠀⠀⡴⠁⠀⠀⠀⠀⠱⡀⠀⠀⠀⢡⡀⠀⠸⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⠠⠜⠁⢠⠇⠀⠀⡸⠀⠀⠀⠀⠀⠀⠀⠈⢢⡀⠀⠀⠣⡀⠀⠘⠦⣀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⡋⠀⠀⠀⡠⠊⠀⠀⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⣇⠀⠀⠀⠉⢢⣄⠀⣈⣣⠀⠀⠀⠀⠀⠀⠀