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Profile of Chal1shkan
Chal1shkan
Solved problems
IOI11_race
IZhO14_bank
JOI14_secret
POI11_rot
POI11_met
IZhO17_bootfall
IZhO17_money
IZhO18_plan
IZhO18_treearray
BOI18_election
IOI19_shoes
IZhO19_sortbooks
IZhO19_xoractive
IZhO19_segments
COCI19_preokret
COCI19_grudanje
COCI19_drvca
COCI19_sob
eJOI19_adventure
BOI20_village
COCI20_patkice
COCI20_bajka
COCI20_papricice
COCI20_crtanje
COCI20_odasiljaci
COCI20_sjekira
COCI20_knjige
COCI20_vlak
eJOI20_fountain
BOI21_xanadu
eJOI21_kpart
COCI21_ljeto
COCI21_kamencici
COCI21_logicari
COCI21_kaucuk
COCI21_kutije
COCI21_lampice
COCI21_cijanobakterije
COCI22_autici
COCI22_autobus
COCI22_izbori
JOI22_ho_t1
JOI22_ho_t2
COCI22_kemija
COCI22_dijamant
COCI22_radio
BOI22_art
BOI22_events
BOI22_island
COCI22_med
COCI22_zemljiste
Submitted but unsolved problems
IZhO17_subsequence
IZhO18_chessboard
IZhO19_stones
eJOI19_colouring
BOI21_books
COCI22_parkovi
JOI22_ho_t3