Submission #1087912

#TimeUsernameProblemLanguageResultExecution timeMemory
1087912vjudge1Linear Garden (IOI08_linear_garden)C++17
100 / 100
506 ms2552 KiB
// Author: Ivan Teo
// Created: Fri Sep 13 19:25:31 2024

#define TASKNAME "dpdick"

/*
⣿⣧⢿⣏⢻⣿⣦⣿⣿⣿⣿⣏⣿⣿⣾⣿⣿⣿⣾⣿⣿⣻⣿⣿⢿⡿⣿⢹⠁⢹⣾⣷⣧⣿⢽⣿⣿⣿⣿⣾⣿⣿⣿⣿⣿⣿⣿⣿⣏⣶⣿⣿⣿⣿⣿⣯⣿⣿⣿⣿⣿⣧⣿⣿⣏
⣿⣿⡜⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣽⣿⣿⣿⣯⣿⣿⣿⣿⢾⣿⣿⣾⡇⢸⣿⣿⣿⣿⢽⣿⣿⣿⣟⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣽⣿⣿⣿
⣿⣿⣷⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢿⣿⣿⣿⣿⣿⣿⣿⢸⣿⣿⣿⣿⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣏⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣿⣿⣿⣿⣿⣿⣿⣻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣯
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠓⠈⣫⠝⠛⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠋⠁⠁⠃⠸⡿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⢿⠃⠋⠁⣠⠞⠁⠀⠀⠀⠈⠻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠋⠀⠀⠀⠀⠀⠀⠀⠹⠻⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⡝⢇⠔⢃⠜⠁⠀⠀⠀⠀⠀⠀⠀⠘⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠲⣴⠏⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⡿⢹⢔⣵⡿⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⠟⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⡻⣷⣾⢻⣿⣿⣿⣿⣿⣿⣿⡿⣿
⣿⣿⣿⣿⣿⣿⡟⢧⣷⣿⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⣿⣿⣿⣿⣿⣿⣿⣿⣿⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠱⡻⡿⣾⢿⣿⣿⣿⣿⣿⣿⢣⣯
⢸⣿⣿⣿⣿⣿⣣⣫⣿⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⣿⣿⣿⣿⣿⣿⡿⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢱⣿⣿⣦⣻⣿⣿⣿⣿⣿⣴⣿
⣿⣿⣿⣿⣿⢙⠝⣿⡏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣿⣿⣿⡟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠃⢷⡿⣟⣽⣿⣿⣿⣷⣿⣿
⣾⣿⣿⡿⠉⢊⣾⣿⠃⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣿⠏⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢿⣜⠉⢻⣿⣿⣿⣿⡾
⣿⣿⣿⡇⠀⢠⣏⣽⠀⠀⠀⠀⠀⠀⢤⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⣇⠀⢸⣿⣿⣿⣿⢣
⣿⣿⣿⡇⠀⢈⣷⢹⠀⡇⠀⠀⠀⢀⣀⣹⣮⠉⠑⠴⠖⠢⠤⠤⠄⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⠤⠤⠤⠒⠒⢈⣉⣥⣖⣀⠀⠀⠀⠀⢀⠀⠀⣸⣇⠀⢸⣿⣿⣿⡟⠘
⣿⣿⣿⡇⢠⣿⣿⢠⢠⣇⠀⠀⠀⠀⠀⠈⢿⢿⡷⣦⣉⠱⢍⣀⡀⠸⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡟⠀⢀⣠⠤⢐⣾⠿⣿⠟⠉⠀⠀⠀⠀⢻⣞⣄⠀⢿⣿⡀⠘⣿⣿⣿⣿⣰
⣿⣿⣿⡇⢸⢸⣿⡼⢸⡿⠁⢀⣤⠤⠖⠒⠲⠾⣿⣦⡍⠓⣄⠈⠉⠉⢿⡄⠀⠀⠀⠀⠀⠀⠀⢀⣾⠋⠉⠁⠀⠖⠉⣡⣮⡷⠖⠒⠲⠦⠤⣠⠄⢻⣿⠀⢸⣿⣇⠀⣿⣿⣿⣿⡁
⣿⣿⣿⣇⣿⣼⡿⣱⣿⣧⠾⠛⠁⠀⠀⠲⠖⠒⠠⣌⡛⢦⡈⠀⡈⠂⠘⣿⠀⠀⠀⠀⠀⠀⢀⣾⠏⠐⠂⡀⣺⣶⢟⣫⠤⠐⠒⠂⠀⠀⠀⠉⠓⢦⣿⣦⣸⣿⣿⡇⣿⣿⣿⣿⣧
⣿⣿⣿⣿⣿⣟⣿⣿⠟⠁⠀⠀⠀⠀⠀⠀⠉⠀⠀⠀⠈⠢⡛⣦⢳⣄⠀⠘⢧⠀⠀⠀⠀⠀⢰⠏⠀⢀⣜⣿⣿⡵⠋⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⢿⣿⣝⣿⡇⣿⣿⣿⣿⣿
⣿⣿⣿⣿⡿⣼⡟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢱⠈⣗⢻⣤⣉⡉⣇⠀⠀⠀⢠⠏⣉⡥⡿⢿⢿⣹⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⣿⢿⣯⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⡇⠀⠀⠀⠀⠀⣀⣠⣤⣤⣤⣤⣤⣀⡀⠀⠀⠂⡌⡇⢳⡀⠉⢹⡉⠉⠉⡟⠉⠀⣼⠁⡇⠆⢀⠀⠀⣀⣤⣤⣤⣤⣤⣄⣀⡀⠀⠀⠀⠀⢀⣿⣿⣿⣿⣿⣿⡿⠋
⠘⢿⣿⡟⢻⣿⣷⣤⣤⣴⣾⣿⣿⣿⠿⠟⠛⠛⠿⠿⣿⣷⣦⣀⠘⠄⢿⡿⢤⠈⢃⡆⣒⠹⢁⣖⡇⠀⠂⢀⣬⣾⣿⡿⠿⠟⠛⠻⠿⣿⣿⣿⣿⣦⣤⣤⣽⣿⣿⢻⣿⣿⠟⣠⡴
⢳⣸⣿⠁⠮⣿⣿⣿⣿⣿⣿⡿⠋⠁⢀⣠⣤⣤⣄⡀⠈⠹⢿⣿⣷⡄⣸⣹⡏⠀⢸⣿⡇⠀⢸⣿⢣⢀⣴⣿⣿⠟⠉⠀⣀⣤⣤⣤⣀⠀⠙⢿⣿⣿⣿⣿⣿⣿⡯⡂⢿⣧⣼⣋⣤
⣝⣿⡟⢀⣹⣿⣿⣿⣿⣿⡿⠁⠀⡰⢿⣿⣿⣿⣿⣿⣦⠀⠈⢿⣿⣿⣾⡟⠀⣀⢼⠟⣿⣄⡀⠹⣷⣿⣿⡿⡇⠀⢀⣾⣿⣿⣿⣿⣿⣷⡄⠀⢹⣿⣿⣿⣿⣿⣿⣁⢸⣿⣟⠟⢳
⢸⣿⠃⢠⢽⣽⢿⣿⣿⣿⡇⠄⠀⣿⣿⣿⡁⠈⣿⣿⣿⡆⠀⢘⣿⣿⡿⠛⠛⢛⣉⡉⣉⡛⠛⠛⢿⣿⣿⡇⠧⠀⢸⣻⣿⣏⠀⣹⣿⣿⡧⠀⢸⣿⣿⣿⣿⢟⡟⠉⠉⣿⣯⠀⣸
⢸⣿⠠⠆⢨⣻⣿⣟⢿⣿⣿⡀⠀⢻⣿⣿⣿⣿⣿⣿⡟⠀⠀⣼⣿⣿⣿⢶⣛⣿⣷⣖⣶⣿⣟⣷⢾⣿⣿⣷⡀⠀⠘⢿⣿⣿⣿⣿⣿⣿⠃⠀⣾⣿⣿⣿⠿⣫⠠⠂⠀⢹⣿⢀⡇
⣿⡏⢰⠀⠀⠙⠶⠶⠾⣿⣿⣷⣄⠀⠉⠛⠻⠟⠛⠉⠀⣠⣾⣿⣿⣿⠟⠛⣉⣩⡀⠀⢀⣨⣉⡛⡿⣿⣿⣿⣷⣄⠀⠈⠙⠛⠿⠟⠋⠁⣠⣾⣿⣿⡿⠷⠾⠟⠁⠀⠀⢸⣿⡾⢠
⣿⣇⢨⣇⠀⠀⠀⠈⡻⠶⢭⣿⣿⣿⣶⣦⣤⣤⣤⣶⣾⣿⣿⢿⣿⡟⡆⣸⣿⡿⠃⠀⠈⠻⣿⣷⠀⠹⣿⢿⣿⣿⣿⣶⣦⣤⣤⣴⣶⣿⣿⣿⡯⠷⣟⠃⠀⠀⠀⢰⡇⢰⣿⠀⡊
⢹⣿⡸⣿⣆⠀⡀⠀⠺⢶⣖⣲⣤⣤⣼⣿⣿⣿⣿⣿⡿⣿⣟⡍⣿⡛⢰⣿⡟⠀⠀⠀⠀⠀⠹⣿⣧⢦⣻⣎⡈⠙⢿⣿⣿⣿⣿⣿⣽⣤⣤⡴⣲⠞⢃⣄⠀⠀⢠⡿⠁⣼⡿⢸⢹
⣷⣿⣿⡷⡉⡻⣿⣿⡆⠀⠀⠈⠉⠁⠀⠀⢋⣉⣠⣶⠿⠟⢉⡼⠓⠁⣾⡟⠀⠀⠀⠀⠀⠀⠀⠹⣿⡄⠉⢿⣌⠻⠷⢦⣬⣉⡙⠁⠀⠁⠉⠉⣤⠔⢉⣿⣿⠟⠋⢀⣼⣿⣷⢿⣸
⠈⠙⠿⣿⣷⡜⣜⣿⣿⢦⣤⣤⣀⣠⣴⣶⠿⠟⠋⠀⠀⠀⠋⠀⠀⢸⡟⠀⠀⠀⠀⠀⠀⠀⠀⠀⠹⣷⠈⠛⠛⠀⠀⠀⠉⠛⢿⣷⣦⣤⣀⡄⣠⣠⣾⣿⡇⠀⢠⣾⡿⠛⠙⢸⣼
⠀⠀⠀⢻⣿⣿⡄⣿⣿⡻⣯⣿⣿⠟⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠿⣿⣿⡋⠀⣿⣿⢁⣴⣿⣿⠁⠀⠀⣹⢸
⠀⠀⠀⠸⣿⡿⣿⡹⣿⣷⣤⣄⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣤⣾⣿⠟⣼⡿⣿⡏⠀⠀⠀⢸⢻
⠤⣄⣄⡀⢻⣿⠈⢷⣀⠙⣿⣿⣿⣶⣤⣤⣄⣀⣀⣀⣀⣀⣀⣤⣤⣤⣶⣶⣾⣷⣦⣀⣤⣾⣷⣶⣶⣦⣤⣤⣀⣀⣀⣀⣀⣀⣀⣤⣤⣶⣾⣿⣿⠟⣡⡼⠏⣸⣿⢀⣀⣤⣤⣾⣻
⠁⠈⠛⠙⢸⣿⡄⣎⡇⢳⣞⣿⣟⡟⠻⡟⢿⣿⣿⣿⣿⣿⣿⣷⣶⣾⣿⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⢻⡿⢛⢿⣿⡏⡰⢻⡇⣀⣿⡟⠉⢹⣿⡟⠙⠉
⠀⠀⠀⠀⠠⢿⣷⢏⢧⠀⡎⣻⣿⣿⡄⣿⡀⢻⠁⠈⣿⠁⠙⣟⠁⠙⡿⠋⢻⡟⠛⢿⠟⠻⡿⠋⢻⡏⠀⢹⡏⠈⣻⠋⠈⣿⠁⣼⣄⣾⣿⡟⠀⠀⣾⠳⢻⣿⢡⠀⠈⢿⣷⡀⠀
⠀⠀⠀⢠⠇⠸⣿⡘⣏⣇⠸⢳⢿⣿⣿⣿⣧⣸⣧⢠⣿⡇⢸⣿⠀⢰⣧⠀⣸⡇⢠⣿⡄⢠⣧⠀⣸⣇⠀⣸⣷⢠⣿⡇⢰⣿⣼⣿⣿⣿⣿⠃⠀⣸⠃⠀⣾⡿⠈⣆⠀⠈⠻⣿⣦
⠀⢀⣾⠏⠀⠀⣿⣇⢸⣾⠀⡏⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣇⣿⣿⣦⣿⣷⣸⣿⣷⣼⣿⣧⣿⣿⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠀⢀⡿⠀⢰⣿⠇⠀⠘⣷⣄⡀⠈⠙
⢔⡽⠃⠀⠀⢠⢻⣿⠈⡟⢢⢸⣼⣿⣿⣿⣿⣏⣿⠹⣿⢻⣿⢻⣿⢿⣿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⣿⡟⢿⡏⢻⢏⣷⣿⣿⣿⠇⢰⢸⠃⠀⣸⣿⢦⠀⠀⠈⠻⣿⣶⡤
⠀⠀⠀⠀⣰⠏⠈⢿⣧⡸⡸⣟⣇⢹⣿⣿⣿⣿⣿⣶⣧⣠⣯⣀⣿⢘⡏⠘⡟⢻⡟⣿⠋⣿⢹⡏⢘⣇⣸⣇⣸⣅⣸⣷⣾⣿⣿⣿⣿⡿⢀⡿⠀⠀⣴⣿⠇⠘⣷⡀⠀⠀⠈⠙⠻
⠀⠀⣠⣾⡏⠀⠀⠈⢻⣷⡕⢎⢹⣯⡛⢿⣿⣿⣿⣿⣿⡿⠿⣿⣿⣿⣿⣾⣿⣾⣷⣿⣶⣿⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠁⡾⠁⢀⣼⡿⠃⠀⠀⠙⣿⣦⠀⠀⠀⠀
⠀⢞⣿⠏⠀⠀⠀⠀⠀⠹⣿⣝⢆⠹⢇⠀⠉⠛⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠟⠋⠁⣠⡾⠁⢠⣾⡿⠁⠀⠀⠀⠀⠹⣿⣷⣦⡀⠀
⠚⠋⠋⠀⠀⠀⠀⠀⠀⠀⢻⣿⣯⡳⡄⠕⠂⠀⠀⠀⠀⠉⠉⠛⠛⠛⠛⠛⠛⠛⠿⠿⠿⠟⠛⠛⠛⠛⠛⠛⠋⠉⠁⠀⠀⠀⠤⠚⠋⡴⣱⣿⢿⠁⠀⠀⠀⠀⠀⠀⢈⡿⠿⣿⣦
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢨⣯⢻⣷⣍⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣾⡿⢻⣇⠀⠀⠀⠀⠀⠀⠀⠩⢒⠀⠀⠉
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠸⡟⡎⢻⣿⣦⡀⠀⠀⠀⢀⣤⡤⠖⢚⣃⣀⡤⠄⠀⠀⠀⠀⠀⠀⢤⣄⣈⣓⠒⠤⣤⣀⠀⠀⠀⢀⣰⣿⣿⢃⣾⡏⠀⠀⠀⠀⠀⠀⠀⠐⠉⠀⠀⠀
⣍⠉⠛⠿⠷⣶⣶⣶⣶⣟⠯⠅⠸⣌⢿⣻⣿⡟⠓⠛⠋⠁⠒⠉⠉⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠉⠓⠈⠉⠛⠛⢛⣿⣿⣿⣁⠞⢀⠥⣒⣶⣶⣶⣶⠾⠿⠟⠋⢁⣴⡾
⠛⢷⣤⡀⡀⠀⠀⠀⠀⠀⠀⠀⠐⣼⡷⣿⣿⣿⣆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⣿⣿⡿⣷⣟⠀⠐⠃⠀⠀⠀⠀⠀⠠⢒⣠⣾⠟⠁⠀
⠀⠀⢉⡻⣷⣄⠀⠀⠀⠀⠀⠀⠀⠘⢿⣳⣿⣿⣿⣦⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣰⣿⣿⡿⡟⡽⠋⠀⠀⠀⠀⠀⠀⠀⣀⣴⠟⣋⠴⣪⠄⠀
⡄⠀⣠⢌⢷⢟⠻⢷⣦⢤⣀⠀⠀⠀⠀⠙⣿⣿⣮⢿⣷⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣼⡿⣫⣿⣿⠟⠁⠀⠀⠀⢀⡠⣴⣾⠿⢋⡠⣚⣵⡮⠖⣾⡋
⣇⠀⢈⣵⣶⣭⣛⠀⠙⣛⢾⣿⣖⣦⣀⡀⢘⣿⣿⣧⢻⣿⣆⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣾⡿⣱⣿⣿⡋⠀⣀⣤⣶⣾⡿⠞⠋⡠⠖⣥⣾⣧⣅⠀⣠⣿⣿
⣿⣿⡿⠭⠤⢹⣷⢈⡙⠂⠈⠓⠽⣮⠽⣿⠿⣿⣿⡝⣷⡹⣿⣅⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣾⡟⣽⢯⣾⣿⡿⣿⡿⢁⠋⠁⠀⠀⠁⡀⢸⣟⠀⠬⣿⣿⣿⣿⣿
⣿⣾⣿⣧⣶⣟⣵⢶⣍⠲⢤⣀⠀⠈⠁⠠⠙⠺⣿⡃⠈⢳⡝⠻⢿⣶⣶⣤⣤⣤⣤⣀⣠⣤⣤⣤⣴⣶⣿⠿⢋⡾⠋⢨⣿⠿⠋⠥⠚⠁⠀⢀⣤⠖⣋⣵⢶⣝⣷⣜⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣶⣿⠁⠉⠳⠿⣦⣄⡀⠀⠀⠀⠉⠳⢦⡹⣄⠀⠀⢻⣏⠙⠛⠛⠛⠛⠛⠋⣩⡿⠁⠀⢠⠟⣠⠾⠋⠊⠀⠊⠀⣠⣴⠾⠗⠋⠀⣿⣧⣺⣿⣿⣿⣿⣿⣿⣿⣿
*/

#include <bits/stdc++.h>
using namespace std;

#define fore(i, a, b)     for (int i = (a); i <= (b); i++)
#define ford(i, a, b)     for (int i = (a); i >= (b); i--)
#define int               long long
using vi =                vector<int>;
using ii =                pair<int, int>;
#define pb                emplace_back
#define fi                first
#define se                second
#define sz(v)             ((int)v.size())
#define all(v)            v.begin() + 1, v.end()
#define alll(v)           v.begin(), v.end()
#define db(x)             cerr << "[" << #x << " = " << x << "]"
#define ell               cerr << "\n=========================================\n"
#define el                cerr << '\n'
#define Unique(v)         v.erase(unique(alll(v)), v.end())
mt19937_64                rng(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int l, int r)
{
    assert(l <= r);
    return uniform_int_distribution<int> (l, r)(rng);
}
template<int D, typename T> struct Vec : public vector < Vec < D - 1, T >>
{
    template<typename... Args> Vec(int n = 0, Args... args) : vector < Vec < D - 1, T >> (n, Vec < D - 1, T > (args...)) {}
};
template<typename T> struct Vec<1, T> : public vector<T>
{
    Vec(int n = 0, const T &val = T()) : vector<T>(n, val) {}
};

inline int add(int x, int y, int mod)
{
    x += y;
    if (x >= mod) x -= mod;
    return x;
}

const int N = 1e6 + 1;
int dp[2][3][3][5][2];

void ivan()
{
    int n, mod;
    cin >> n >> mod;
    string s;
    cin >> s;
    // Vec<5, int> dp(n, 3, 3, 5, 2, -1);

    function<int(int, int, int, int, int)> calc = [&](int i, int mx, int mn, int sum, bool tight) -> int
    {
        if (mx - mn > 2) return 0;
        if (sum > 2 || sum < -2) return 0;
        return dp[i & 1][mx][mn + 2][sum + 2][tight];
    };

    ford(i, n, 0)
    {
        fore(mx, 0, 2) fore(mn, -2, 0) if (mx - mn <= 2) fore(sum, -2, 2) fore(tight, 0, 1)
        {
            auto &res = dp[i & 1][mx][mn + 2][sum + 2][tight];
            if (i == n) 
            {
                res = 1;
                continue;
            }
            res = calc(i + 1, max(mx, sum + 1), mn, sum + 1, tight || (s[i] == 'P'));
            if (tight || s[i] == 'P') res = add(res, calc(i + 1, mx, min(mn, sum - 1), sum - 1, tight), mod);
        }
        memset(dp[i - 1 & 1], 0, sizeof(dp[i - 1 & 1]));
    }
    cout << calc(0, 0, 0, 0, 0);
}

signed main()
{
    cin.tie(0)->sync_with_stdio(0);
    if (fopen("in", "r")) freopen("in", "r", stdin);
    if (fopen(TASKNAME".inp", "r"))
    {
        freopen(TASKNAME".inp", "r", stdin);
        freopen(TASKNAME".out", "w", stdout);
    }
    int tc = 1;
    // cin >> tc;
    while (tc--) ivan();
    ell, cerr << "Execution Time: " << 1.0 * clock() / CLOCKS_PER_SEC << "s", ell;
    return 0;
}

Compilation message (stderr)

linear_garden.cpp: In function 'void ivan()':
linear_garden.cpp:134:21: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
  134 |         memset(dp[i - 1 & 1], 0, sizeof(dp[i - 1 & 1]));
      |                   ~~^~~
linear_garden.cpp:134:46: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
  134 |         memset(dp[i - 1 & 1], 0, sizeof(dp[i - 1 & 1]));
      |                                            ~~^~~
linear_garden.cpp: In function 'int main()':
linear_garden.cpp:142:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  142 |     if (fopen("in", "r")) freopen("in", "r", stdin);
      |                           ~~~~~~~^~~~~~~~~~~~~~~~~~
linear_garden.cpp:145:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  145 |         freopen(TASKNAME".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
linear_garden.cpp:146:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  146 |         freopen(TASKNAME".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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