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Submission #989497

# Submission time Handle Problem Language Result Execution time Memory
989497 2024-05-28T08:37:39 Z hahahaha Feast (NOI19_feast) C++17
100 / 100
 98 ms 12832 KB 
/**
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⣤⡤⠤⣤⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡴⠛⠉⠀⠀⠀⠀⠈⠙⢷⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⣆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣰⠶⣄⡀⠀⠀⠀⢠⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⡏⠀⠀⠉⠛⠶⣤⣸⡇⠀⠀⠀⠀⣀⣤⣶⣶⠒⠒⠒⠶⣬⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣀⣤⠴⠶⣿⠀⠀⠀⠀⠀⠀⠈⠉⠉⠛⠒⠶⢿⣭⣀⡀⢻⡀⠀⠀⢠⡿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣤⠶⠛⠋⠁⠀⠀⢸⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠉⠛⠷⣴⣞⠛⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣀⡴⠞⠉⠀⠀⠀⠀⠀⠀⢰⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⢦⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠞⠋⠀⠀⠀⠀⢀⡤⠠⡄⠀⢰⡏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⠿⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⡞⠁⠀⠀⠀⠀⣠⠖⠋⠀⣸⠇⠀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⢀⡀⠀⠀⠀⠀⠀⠀⢦⡀⠀⠀⠀⠸⣷⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡼⠋⠀⠀⠀⠀⢀⣴⠋⢀⢀⡴⠋⠀⢀⣼⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣽⠀⣼⢿⡄⠀⠀⠀⠀⣆⠀⠉⢦⡀⠀⠀⠀⠘⢧⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⡟⠁⠀⠀⠀⠀⣠⠟⠇⠀⠈⠉⠁⠀⣀⣾⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡟⢰⠏⠀⠻⣄⠀⠀⠀⠹⣄⣰⠟⠁⠀⠀⠀⠀⠀⢻⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣾⡟⠀⢀⣀⡖⠀⣰⠏⠀⠀⠀⠀⠀⢀⣼⣿⠋⠸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣧⡟⠀⠀⠀⠹⣦⠀⠀⠀⠀⠁⠀⣶⠀⠀⣴⠛⢧⠀⢻⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⣠⠞⣩⡟⠀⠀⠈⠉⠀⢀⡟⠀⠀⢀⣀⣠⣤⣾⡿⠗⠒⠚⣿⠠⣤⠀⠀⠀⠀⠀⠀⠀⢸⣿⠓⠒⠲⠶⠶⠾⢷⣤⣀⣀⠀⠀⠙⣧⠀⠹⣆⣼⠃⠀⢷⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⢀⡴⠟⢁⡼⣿⠁⠀⠀⠀⠀⠀⢸⠃⠀⠀⠈⠉⢠⡾⠋⠀⠀⠀⠀⠸⣆⠙⣧⡀⠀⠀⠀⠀⠀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠻⣆⠉⠁⠀⠀⢹⡄⠀⠈⠁⠀⠀⠘⣷⢦⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⣠⡶⠋⢀⡴⠋⢰⡏⠀⠀⠀⠀⠀⠀⢸⠀⠀⠀⠀⣠⠟⠀⠀⠀⠀⠀⠀⠀⢻⡄⢸⣷⣄⠀⠀⠀⠀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠈⢳⣄⠀⠀⠸⣧⠀⠀⠀⠀⠀⠀⢿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⢰⣾⡥⠴⠞⠋⠀⠀⣼⠀⠀⠀⠀⠀⠀⠀⣸⠀⠀⠀⣰⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⡄⣷⠙⠷⣄⡀⠀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢷⣄⠀⣿⠀⠀⠀⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⣿⡆⠀⠀⠀⠀⠀⠀⢸⡄⠀⣼⢏⣀⣤⣶⣦⣤⣶⣶⣶⣶⣶⣿⣿⣾⡆⠀⠈⠻⢦⣼⡇⢰⣶⣶⣶⣶⣶⣶⣶⣤⣤⣤⣦⠙⢧⣿⠀⠀⠀⠀⠀⠀⢸⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⣿⡇⠀⠀⠀⠀⠀⠀⠘⣇⣼⠏⠘⣿⡿⢿⣿⣿⣿⣿⣿⡏⠉⠉⠉⠙⠃⠀⠀⠀⠀⠉⠁⠘⠛⢻⣿⣿⣿⣿⣿⣟⠛⢛⠷⠀⠀⣿⠀⠀⠀⠀⠀⠀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⡟⣷⠀⠀⠀⠀⠀⠀⠀⢻⡏⠀⠀⠀⠀⣸⣿⣿⣿⣿⣿⣷⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣾⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⢰⡏⠀⠀⠀⠀⠀⠀⣾⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⣷⢹⣆⠀⠀⠀⠀⠀⠀⠈⣷⠀⠀⠀⠀⢹⣿⣿⣿⣿⣿⣿⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⣾⠀⠀⠀⠀⠀⠀⢰⣿⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⢿⠘⣿⣆⠀⠀⠀⠀⠀⠐⠘⣧⠀⠀⠀⠘⢿⣿⣿⣿⣿⠏⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢿⣿⣿⣿⡿⠃⠀⠀⠀⣼⠃⠀⠀⠀⠀⠀⣰⠟⠐⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠸⣇⣿⠙⣧⣄⠀⠀⠀⠀⠀⠘⢧⡀⠀⠀⠈⢹⠿⢟⡋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢻⡿⠀⡀⠀⠀⣼⠃⠀⠀⠀⠀⣀⡾⠋⠀⣴⣷⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⢻⣿⠀⣿⠝⠳⣤⣀⡀⠀⠀⠈⢷⣤⠇⢠⡞⠠⠾⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠟⠁⡾⠃⣠⡾⠃⠀⠀⣀⣤⠾⠋⠀⠀⠀⡿⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⣿⣸⣿⠀⠀⠀⠉⠙⠓⡶⠦⠤⣿⡆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠓⢰⡿⠤⠴⠶⣿⠉⠀⠀⠀⠀⠀⢠⡇⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⣿⢻⠀⠀⠀⠀⠀⠃⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢲⣄⠀⠀⠀⠀⠀⠀⠀⢀⣴⠆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡟⠀⠀⠀⠀⠀⠀⢸⡇⣸⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡿⢸⡇⠀⠀⠀⠀⠀⢿⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠛⠲⠤⣤⠤⠴⠞⠋⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⡏⠀⠀⠀⠀⠀⠀⢸⠇⠈⣇⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⡇⢸⡇⠀⠀⠀⠀⠀⢸⣿⣦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢿⡇⠀⠀⠀⠀⠀⠀⢺⢀⠀⢿⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣸⢷⠛⣇⠀⠀⠀⠀⠀⠈⣿⠉⠻⣦⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣾⣅⣸⠀⠀⠀⠀⠀⠀⢀⣿⢸⡀⢸⡇⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡿⠘⣀⣿⠀⠀⠀⠀⠀⢷⢸⡄⠀⠈⠙⠶⣤⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣠⡴⠟⠁⠀⠈⣿⠀⠀⠀⠀⠀⠀⠈⡟⣼⡇⠀⣧⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⡇⠀⢿⢿⠀⠀⠀⠀⠀⠀⠈⣧⠀⠀⠀⠀⠀⠉⠛⠶⢤⣤⣀⣀⠀⣀⡀⠀⠀⠀⠀⠀⢀⣠⡴⠞⠋⠁⠀⠀⠀⠀⢀⡏⠀⠀⠀⠀⠀⠀⢠⡇⢹⣤⠀⢹⡄⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⠀⠀⡿⢸⡆⠀⠀⠀⠀⠀⠀⢻⡆⠀⠀⠀⠀⠀⠀⠀⠀⣿⡿⠟⠋⠉⠁⠀⠀⠀⠀⠀⢸⠁⠀⠀⠀⠀⠀⠀⠀⠀⢸⠇⠀⠀⠀⠀⠀⠀⢸⡇⠈⣟⠀⠈⣷⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⢰⡟⠀⢰⡇⠘⡇⠀⠀⠀⠀⠀⠘⠀⣷⠀⠀⠀⠀⠀⠀⠀⠀⣿⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⡿⠆⠀⠀⠀⠀⠀⠀⣼⠁⠀⢻⡀⠀⠸⣇⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⣼⠁⠀⣼⠁⠀⣿⠀⠀⠀⠀⠀⠀⠀⠻⣇⣀⠀⠀⠀⠀⠀⠀⣿⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡀⠀⠀⠀⠀⠀⠀⠀⣰⡇⠀⠀⠀⠀⠀⠀⠀⣿⡆⠀⠈⣷⡀⠀⢻⡄⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⢰⡇⠀⢀⡏⠀⠀⢻⠀⠀⠀⠀⠀⠀⠀⠀⢻⣦⣄⠀⠀⠀⠀⣠⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⣧⠀⠀⠀⠀⠀⣠⣾⣿⠀⠀⠀⠀⠀⠀⢠⣠⡇⡇⠀⠀⠸⣯⡀⠀⢷⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⡾⠀⠀⣼⠁⠀⠀⠸⡇⠀⠀⠀⠀⠀⠀⠀⠀⢿⣽⡧⠴⢶⣿⣿⠖⠒⠛⠛⠃⠀⠀⠀⠚⠋⠉⠉⠉⠙⠓⠲⢾⡛⠻⣽⠃⠀⠀⠀⠀⠀⠀⢸⣿⣃⠀⠀⠀⠀⢹⣷⠀⠘⣧⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⣸⠃⠀⢸⡏⠀⠀⠀⢀⣿⠀⠀⠀⠀⢀⣀⠀⠈⠈⢷⠖⠚⠋⠁⢹⡇⠀⢀⣴⠶⠶⢦⣄⣀⣤⡶⠶⠤⠤⠤⠶⠾⠇⢰⡏⠀⠀⠀⠀⠀⠀⠻⣿⣿⣤⡀⠀⠀⠀⠀⢿⣀⠀⠸⣆⠀⠀⠀
⠀⠀⠀⠀⠀⢰⠏⠀⢀⡿⠀⠀⠀⣰⠟⢹⣿⡄⠀⠀⠀⠻⣄⠀⠀⠘⣷⣤⣄⣀⣈⡙⠛⢹⡷⢶⣦⣴⣾⣛⣻⢯⣴⣦⠴⠖⠃⠀⢀⡾⠀⠀⠀⠀⠀⠀⠀⢰⣿⡇⠀⠹⣆⠀⠀⠸⡞⣧⣆⠀⠹⣄⠀⠀
⠀⠀⠀⠀⢠⡟⠀⠀⡼⠁⠀⠀⣰⠏⠀⠈⣟⣧⠀⠀⠀⠀⢻⣆⠀⠀⠈⣧⡿⠀⠈⠉⠛⠛⣻⣿⡿⢿⣿⡍⠉⠀⠀⠀⠀⠀⠀⠀⡾⠁⠀⠀⠀⢀⣴⠀⠀⡾⣿⠁⠀⠀⠘⣧⠀⠀⢿⠘⣟⠀⠀⢻⡄⠀
⠀⠀⢀⣠⡟⠀⢀⡾⠃⠀⠀⣰⡏⠀⠀⠀⣻⠘⣧⠀⠀⠀⠀⢻⣷⡄⠀⠘⢷⡀⠀⠀⠀⠀⠩⣉⠁⠈⣛⡁⠀⠀⠀⠀⠀⠀⣀⣾⠁⠀⠀⣀⣠⣟⠁⠀⣠⣤⡟⠀⠀⠀⠀⠘⣧⡄⠘⡇⠙⣇⠀⠀⠻
*/
#include <bits/stdc++.h>
#define i64 long long
#define ld long double
#define bit(n,i) ((n>>i)&1)
#define mp make_pair
#define pii pair<int,int>
#define sz(x) (int)((x).size())
#define FOR(i,a,b) for(int i=a; i<=b; i++)
#define FOD(i,a,b) for(int i=a; i>=b; i--)
#define fi first
#define se second
#define pb push_back
#define all(x) x.begin(),x.end()
#define __sumairu__ main()
#define i_love_flandre_scarlet void seggs()
#define file(name) if(fopen(name".inp","r")){freopen(name".inp","r",stdin);freopen(name".out","w",stdout);}
#define brute(name) if(fopen(name".inp","r")){freopen(name".inp","r",stdin);freopen(name".ans","w",stdout);}
#define TIME (1.0*clock()/CLOCKS_PER_SEC)
#define FAST ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ai(n) array<int,n>
using namespace std;
const int MOD=998244353;
//const int MOD=1e9+7;
const int inf=1e9;
mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
///check the limits, dummy
const int N=3e5+5;
#define int long long

int n,k;
int a[N];
i64 pre[N];

namespace sub1
{
    bool check(){return n<=2000&&k<=2000;}

    i64 t[2003][2003*4];

    void up(int c,int id,int l,int r,int p,i64 v)
    {
        if(p>r||p<l)return;
        if(l==r)
        {
            t[c][id]=v;
            return;
        }
        int m=(l+r)/2;
        up(c,id*2,l,m,p,v);
        up(c,id*2+1,m+1,r,p,v);
        t[c][id]=max(t[c][id*2],t[c][id*2+1]);
    }

    i64 get(int c,int id,int l,int r,int x,int y)
    {
        if(x>r||y<l)return -1e18;
        if(x<=l&&r<=y)return t[c][id];
        int m=(l+r)/2;
        return max(get(c,id*2,l,m,x,y),get(c,id*2+1,m+1,r,x,y));
    }

    void solve()
    {
        vector<vector<i64>>dp(n+1,vector<i64>(k+1));

        /**
        dp[i][j]: up to i, picked j segments
        dp[i][j] = dp[k][j-1]+sum(k+1,i) = ...+t[i]-t[k]
        (take i)dp[i][j] = t[i] + dp[k][j-1] - t[k] (k<i)
        (not take i)dp[i][j] = dp[k][j]
        */
        memset(t,-60,sizeof t);

        i64 ans=0;
        if(k==1)ans=max(ans,1ll*a[1]);

        FOR(i,0,n)up(0,1,0,n,i,0-pre[i]);

        vector<vector<i64>>preMx(k+1,vector<i64>(n+1));

        FOR(i,1,n)
        {
            FOD(j,min(k,i),1)
            {
                dp[i][j]=max(dp[i][j],pre[i]+get(j-1,1,0,n,0,i-1));
                dp[i][j]=max(dp[i][j],preMx[j][i-1]);

                up(j,1,0,n,i,dp[i][j]-pre[i]);
                preMx[j][i]=max(preMx[j][i-1],dp[i][j]);
            }
            ans=max(ans,dp[i][k]);
        }

//        FOR(i,1,n)
//        {
//            FOR(j,1,k)if(dp[i][j]!=-1e18)
//            {
//                cout<<i<<' '<<j<<' '<<dp[i][j]<<'\n';
//            }
//        }

        cout<<ans;
        exit(0);
    }
}

namespace sub2
{
    bool check(){return 1;}

    pii dp[N];
    pii check(int x)
    {
        memset(dp,0,sizeof(dp));
        pii ans{};
        FOR(i,0,n-1)
        {
            pii tmp{dp[i].first-pre[i], dp[i].second};

            if(tmp.fi^ans.fi?tmp.fi>ans.fi:tmp.se<ans.se)ans=tmp;

            pii tmp2{ans.fi-x+pre[i+1],ans.se+1};

            dp[i+1]=(tmp2.fi^dp[i].fi?tmp2.fi>dp[i].fi:tmp2.se<dp[i].se)?tmp2:dp[i];
        }
        return dp[n];
    }

    void solve()
    {
        FOR(i,1,n)a[i]+=a[i-1];

        int l=0,r=3e14;
        while(l<r)
        {
            int mid=(l+r)/2;
            if(check(mid).se<=k)r=mid;
            else l=mid+1;
        }
        pii ans=check(l);
        cout<<ans.fi+k*l;
        exit(0);
    }
}

i_love_flandre_scarlet
{
    cin>>n>>k;
    FOR(i,1,n)
    {
        cin>>a[i];
        pre[i]=pre[i-1]+a[i];
    }

//    if(*min_element(a+1,a+n+1)>=0)
//    {
//        i64 ans=0;
//        FOR(i,1,n)ans+=a[i];
//        cout<<ans;
//        return;
//    }
//
//    int cnt=0;
//    FOR(i,1,n)cnt+=(a[i]<0);
//    if(cnt==1)
//    {
//        i64 L=0,R=0;
//        FOR(i,1,n)if(a[i]<0)
//        {
//            L=pre[i-1];
//            R=pre[n]-pre[i];
//        }
//        if(k>=2)cout<<L+R;
//        else cout<<max(L,R);
//        return;
//    }

    if(sub2::check())sub2::solve();
    if(sub1::check())sub1::solve();
}

__sumairu__
{
    FAST
    //file("ぺぽよ⋆PEPOYO");
//    freopen("feas.inp","r",stdin);
//    freopen("feas.out","w",stdout);

    int t=1;//cin>>t;
    while(t--)seggs();
    //cerr<<"\nTime elapsed: "<<TIME<<" s.\n";
}
/**
6 1
1 -2 3 -1 5 -6

6 2
1 2 3 -10 5 6

6 4
-1 -2 -1 0 -5 -1
*/

Compilation message

feast.cpp: In function 'std::pair<long long int, long long int> sub2::check(long long int)':
feast.cpp:156:31: warning: 'void* memset(void*, int, size_t)' clearing an object of type 'struct std::pair<long long int, long long int>' with no trivial copy-assignment; use assignment instead [-Wclass-memaccess]
  156 |         memset(dp,0,sizeof(dp));
      |                               ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/specfun.h:45,
                 from /usr/include/c++/10/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:41,
                 from feast.cpp:43:
/usr/include/c++/10/bits/stl_pair.h:211:12: note: 'struct std::pair<long long int, long long int>' declared here
  211 |     struct pair
      |            ^~~~
feast.cpp: At global scope:
feast.cpp:56:21: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   56 | #define __sumairu__ main()
      |                     ^~~~
feast.cpp:224:1: note: in expansion of macro '__sumairu__'
  224 | __sumairu__
      | ^~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 9692 KB Output is correct
2 Correct 59 ms 9808 KB Output is correct
3 Correct 69 ms 9836 KB Output is correct
4 Correct 59 ms 9812 KB Output is correct
5 Correct 58 ms 9820 KB Output is correct
6 Correct 58 ms 9556 KB Output is correct
7 Correct 58 ms 9560 KB Output is correct
8 Correct 60 ms 9816 KB Output is correct
9 Correct 58 ms 9560 KB Output is correct
10 Correct 59 ms 9792 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 9560 KB Output is correct
2 Correct 64 ms 9720 KB Output is correct
3 Correct 47 ms 10844 KB Output is correct
4 Correct 49 ms 10840 KB Output is correct
5 Correct 58 ms 12380 KB Output is correct
6 Correct 47 ms 10896 KB Output is correct
7 Correct 50 ms 10976 KB Output is correct
8 Correct 60 ms 12636 KB Output is correct
9 Correct 61 ms 12628 KB Output is correct
10 Correct 50 ms 10844 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 9820 KB Output is correct
2 Correct 56 ms 9564 KB Output is correct
3 Correct 74 ms 9820 KB Output is correct
4 Correct 52 ms 9636 KB Output is correct
5 Correct 52 ms 9808 KB Output is correct
6 Correct 52 ms 9812 KB Output is correct
7 Correct 52 ms 9660 KB Output is correct
8 Correct 53 ms 9820 KB Output is correct
9 Correct 52 ms 9816 KB Output is correct
10 Correct 53 ms 9820 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 7000 KB Output is correct
2 Correct 7 ms 7000 KB Output is correct
3 Correct 6 ms 7004 KB Output is correct
4 Correct 8 ms 7220 KB Output is correct
5 Correct 7 ms 7004 KB Output is correct
6 Correct 7 ms 7000 KB Output is correct
7 Correct 6 ms 7180 KB Output is correct
8 Correct 7 ms 7004 KB Output is correct
9 Correct 8 ms 7220 KB Output is correct
10 Correct 6 ms 7004 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 7000 KB Output is correct
2 Correct 7 ms 7000 KB Output is correct
3 Correct 6 ms 7004 KB Output is correct
4 Correct 8 ms 7220 KB Output is correct
5 Correct 7 ms 7004 KB Output is correct
6 Correct 7 ms 7000 KB Output is correct
7 Correct 6 ms 7180 KB Output is correct
8 Correct 7 ms 7004 KB Output is correct
9 Correct 8 ms 7220 KB Output is correct
10 Correct 6 ms 7004 KB Output is correct
11 Correct 7 ms 7000 KB Output is correct
12 Correct 7 ms 7164 KB Output is correct
13 Correct 6 ms 7004 KB Output is correct
14 Correct 7 ms 7004 KB Output is correct
15 Correct 6 ms 7004 KB Output is correct
16 Correct 8 ms 7004 KB Output is correct
17 Correct 7 ms 7100 KB Output is correct
18 Correct 7 ms 7224 KB Output is correct
19 Correct 7 ms 7004 KB Output is correct
20 Correct 7 ms 7224 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 7000 KB Output is correct
2 Correct 7 ms 7000 KB Output is correct
3 Correct 6 ms 7004 KB Output is correct
4 Correct 8 ms 7220 KB Output is correct
5 Correct 7 ms 7004 KB Output is correct
6 Correct 7 ms 7000 KB Output is correct
7 Correct 6 ms 7180 KB Output is correct
8 Correct 7 ms 7004 KB Output is correct
9 Correct 8 ms 7220 KB Output is correct
10 Correct 6 ms 7004 KB Output is correct
11 Correct 7 ms 7000 KB Output is correct
12 Correct 7 ms 7164 KB Output is correct
13 Correct 6 ms 7004 KB Output is correct
14 Correct 7 ms 7004 KB Output is correct
15 Correct 6 ms 7004 KB Output is correct
16 Correct 8 ms 7004 KB Output is correct
17 Correct 7 ms 7100 KB Output is correct
18 Correct 7 ms 7224 KB Output is correct
19 Correct 7 ms 7004 KB Output is correct
20 Correct 7 ms 7224 KB Output is correct
21 Correct 8 ms 7004 KB Output is correct
22 Correct 8 ms 7048 KB Output is correct
23 Correct 7 ms 7004 KB Output is correct
24 Correct 6 ms 7004 KB Output is correct
25 Correct 7 ms 7004 KB Output is correct
26 Correct 7 ms 7004 KB Output is correct
27 Correct 7 ms 7240 KB Output is correct
28 Correct 7 ms 7004 KB Output is correct
29 Correct 7 ms 7004 KB Output is correct
30 Correct 7 ms 7240 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 62 ms 9692 KB Output is correct
2 Correct 59 ms 9808 KB Output is correct
3 Correct 69 ms 9836 KB Output is correct
4 Correct 59 ms 9812 KB Output is correct
5 Correct 58 ms 9820 KB Output is correct
6 Correct 58 ms 9556 KB Output is correct
7 Correct 58 ms 9560 KB Output is correct
8 Correct 60 ms 9816 KB Output is correct
9 Correct 58 ms 9560 KB Output is correct
10 Correct 59 ms 9792 KB Output is correct
11 Correct 43 ms 9560 KB Output is correct
12 Correct 64 ms 9720 KB Output is correct
13 Correct 47 ms 10844 KB Output is correct
14 Correct 49 ms 10840 KB Output is correct
15 Correct 58 ms 12380 KB Output is correct
16 Correct 47 ms 10896 KB Output is correct
17 Correct 50 ms 10976 KB Output is correct
18 Correct 60 ms 12636 KB Output is correct
19 Correct 61 ms 12628 KB Output is correct
20 Correct 50 ms 10844 KB Output is correct
21 Correct 52 ms 9820 KB Output is correct
22 Correct 56 ms 9564 KB Output is correct
23 Correct 74 ms 9820 KB Output is correct
24 Correct 52 ms 9636 KB Output is correct
25 Correct 52 ms 9808 KB Output is correct
26 Correct 52 ms 9812 KB Output is correct
27 Correct 52 ms 9660 KB Output is correct
28 Correct 53 ms 9820 KB Output is correct
29 Correct 52 ms 9816 KB Output is correct
30 Correct 53 ms 9820 KB Output is correct
31 Correct 7 ms 7000 KB Output is correct
32 Correct 7 ms 7000 KB Output is correct
33 Correct 6 ms 7004 KB Output is correct
34 Correct 8 ms 7220 KB Output is correct
35 Correct 7 ms 7004 KB Output is correct
36 Correct 7 ms 7000 KB Output is correct
37 Correct 6 ms 7180 KB Output is correct
38 Correct 7 ms 7004 KB Output is correct
39 Correct 8 ms 7220 KB Output is correct
40 Correct 6 ms 7004 KB Output is correct
41 Correct 7 ms 7000 KB Output is correct
42 Correct 7 ms 7164 KB Output is correct
43 Correct 6 ms 7004 KB Output is correct
44 Correct 7 ms 7004 KB Output is correct
45 Correct 6 ms 7004 KB Output is correct
46 Correct 8 ms 7004 KB Output is correct
47 Correct 7 ms 7100 KB Output is correct
48 Correct 7 ms 7224 KB Output is correct
49 Correct 7 ms 7004 KB Output is correct
50 Correct 7 ms 7224 KB Output is correct
51 Correct 8 ms 7004 KB Output is correct
52 Correct 8 ms 7048 KB Output is correct
53 Correct 7 ms 7004 KB Output is correct
54 Correct 6 ms 7004 KB Output is correct
55 Correct 7 ms 7004 KB Output is correct
56 Correct 7 ms 7004 KB Output is correct
57 Correct 7 ms 7240 KB Output is correct
58 Correct 7 ms 7004 KB Output is correct
59 Correct 7 ms 7004 KB Output is correct
60 Correct 7 ms 7240 KB Output is correct
61 Correct 92 ms 12768 KB Output is correct
62 Correct 98 ms 12664 KB Output is correct
63 Correct 63 ms 12628 KB Output is correct
64 Correct 87 ms 12832 KB Output is correct
65 Correct 79 ms 12624 KB Output is correct
66 Correct 79 ms 12624 KB Output is correct
67 Correct 77 ms 12624 KB Output is correct
68 Correct 86 ms 12628 KB Output is correct
69 Correct 56 ms 12636 KB Output is correct
70 Correct 71 ms 12472 KB Output is correct