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Profile of hirayuu_oj
hirayuu_oj
Solved problems
IOI12_tournament
IOI12_scrivener
IOI13_cave
IOI13_robots
IOI10_cluedo
IOI10_quality
IOI11_crocodile
IOI11_ricehub
IOI14_game
IOI14_gondola
IOI15_boxes
IOI16_reverse
IOI16_tetris
IOI16_laugh
IOI16_dna
IOI16_molecules
IOI16_messy
IOI16_paint
IOI17_books
IOI17_coins
IOI09_garage
IOI09_mecho
IOI08_printer
IOI08_linear_garden
IOI08_teleporters
IOI07_aliens
IOI07_flood
IOI07_miners
IOI18_combo
IOI18_doll
APIO19_strange_device
IOI19_cycle
IOI19_vision
IOI10_memory
IOI10_traffic
IOI09_hiring
IOI09_poi
IOI09_raisins
APIO20_paint
APIO20_swap
IOI20_gift
IOI20_jelly
IOI21_dna
CEOI22_homework
IOI22_fish
IOI22_circuit
Submitted but unsolved problems
IOI17_nowruz
IOI17_wiring
IOI18_seats
IOI18_highway
IOI18_meetings
BOI20_joker
BOI21_swaps
BOI22_vault
IOI22_prison
IOI22_towers
IOI22_insects
IOI22_islands