Tamio-Vesa Nakajima

Competitive Programming Tasks

I am the (co-)author of a number of tasks for various competitive programming olympiads. A non-exhaustive list, taken from infoarena.ro and kilonova.ro can be seen here. The source column signifies the contest where the problem was set; it is either in English or Romanian.

#	Problem name	Source
`Adunare`	InfoPro, Phase III, Group A
`Aeroport`	Lot 2023 Baraj 2 Seniori: Problema 2
`Akanemat`	AGM 2019, runda nationala
`Alambicare`	Summer Challenge 2019
`Aliniate`	Algoritmiada 2019 Runda Finala
`Apa`	Lot 2023 Baraj 1 Seniori: Problema 2
`Aranjare`	ONI 2018 XI-XII: Ziua 1, Problema 1
`Arboras`	RMI 2020: Day 2 Problem 3
`ArboreX`	Lot 2020 Baraj 1 Seniori: Problema 1
`Arbquery`	Science On 2021 XI-XII: Problema 2
`Arbset`	Science On 2021 Baraj: Problema 3
`Arbsumpow`	ONI 2021 Baraj 1 Seniori: Problema 2
`Arugaktus`	AGM 2019, runda nationala
`Babel`	ONI 2025 Baraj 2 Seniori: Problema 2
`Beyond the Wall`	Winter Challenge 2020
`Bignum`	Science On 2021, clasa 7-8
`Bisuma`	Algoritmiada 2019 Runda Finala
`Brperm`	RMI 2020: Day 1 Problem 2
`Cangrena`	Lot 2018 Baraj 1 Seniori: Problema 2
`Caterinca`	AGM 2019, runda finala
`Cheerleader`	infO(1) Cup 2020
`Cifre`	ONI 2025 Baraj 2 Seniori: Problema 1
`Circles`	RMI 2023: Day 2 Problem 1
`Circuit`	Lot 2025 Baraj 3 Seniori: Problem 2
`Cmmdcgame`	Winter Challenge 2020
`Cntlex`	Science On 2021, clasa 7-8
`CntSubsirMax`	InfoPro, Phase II, Group A
`Colorfulconflict`	Algoritmiada 2019 Runda PreONI
`CoolRot`	infO(1) Cup 2021, International Round
`Copii3`	Algoritmiada 2018 Runda Maraton
`Countperm`	Algoritmiada 2022, Runda 3
`Craciun`	Algoritmiada 2018 Runda Maraton
`Cubeon`	AGM 2019, runda nationala
`Date`	infO(1) Cup 2022, Day 2
`Diferente`	ad-hoc
`Dirijor`	Lot 2023 Baraj 3 Seniori: Problema 1
`Divisors`	InfO(1) Cup 2025, Day 2
`Djok`	Algoritmiada 2019 Runda Finala
`Droom`	AGM 2019, runda finala, ziua 1
`dulciuri`	OJI 2022 XI-XII: Problema 1
`Dupadealuri`	Algoritmiada 2019 Runda Finala
`expresii`	ONI 2021 X: Problema 3
`Football`	infO(1) Cup 2020
`Gard6`	Algoritmiada 2018 Runda Finala
`Gardening`	RMI 2021: Day 1, Problem 1
`Gcdseq`	Algoritmiada 2022, Runda 2
`ghinion`	Lot 2022 Baraj 3 Seniori: Problema 2
`Hiperquery`	Science On 2021 XI-XII: Problema 3
`Hipersir`	Science On 2021 XI-XII: Problema 1
`Hipersum`	Science On 2021 Baraj: Problema 2
`Jumpy`	infO(1) Cup 2021, International Round
`Kxorbonacci`	Algoritmiada 2022, Runda 1
`Leftmax`	OJI 2020 X: Problema 3
`Lucky7`	Empowersoft 2019
`Matriceechilibrata`	Algoritmiada 2022, Runda 2
`Matsum`	InfoPro, Phase IV, Group A
`Mdluffxor`	AGM 2019, runda finala,ziua 1
`minimize`	Lot 2022 Baraj 2 Seniori: Problema 1
`Minmaxtree`	BOI 2018
`Misakatelefon`	AGM 2019, runda finala
`Monede`	InfoPro, Phase I, Group A
`Nespus`	Algoritmiada 2018 Runda Maraton
`NiceSet`	infO(1) Cup 2022, Day 1
`Niciomare`	Algoritmiada 2019 Runda Maraton
`Nines`	InfO(1) Cup 2025, Day 1
`Nopolynolife`	AGM 2019, runda nationala
`Noprimenolife`	AGM 2019, runda finala
`Noxornolife`	AGM 2019, runda finala, ziua 1
`Palatulvoltaic`	Algoritmiada 2019 Runda Maraton
`Powerful`	AGM 2019, runda finala
`Present`	RMI 2021: Day 1, Problem 2
`Primesato`	AGM 2019, runda finala
`pscfft`	ONI 2018 Baraj Seniori: Problema 3
`pswap`	ONI 2021 Baraj 2 Seniori: Problema 2
`Saumat`	Lot 2021 Baraj 3 Seniori: Problema 1
`Secvzerounu`	Romanian Collegiate Programming Contest 2019
`Sequences`	infO(1) Cup 2023, Day 1
`Seqval`	Science On 2021, clasa 9
`Shiroeseq`	AGM 2019, runda nationala
`Siclam`	Lot 2024 Baraj 3 Seniori: Problema 3
`Sirag`	ONI 2025 X: Problema 3
`sortall`	Lot 2018 Baraj 3 Seniori: Problema 1
`Sotron2`	Science On 2021, clasa 7-8
`Stars`	AGM 2019, runda finala
`Subiectul I`	Lot 2024 Baraj 4 Seniori: Problema 1
`Table Tennis`	infO(1) Cup 2020
`Tanakagame`	Empowersoft 2019
`Tarzan`	Cupa SEPI 2023 Seniori: Problema 3
`To be, xor not to be`	RMI 2023: Ziua 2, Problema 3
`Trapez`	Lot 2025 Baraj 2 Seniori: Problem 3
`Trees`	infO(1) Cup 2026, Day 2: Problem 1
`trenbus`	Lot 2018 Baraj 3 Seniori: Problema 3
`tricolor`	ONI 2018 XI-XII: Ziua 1, Problema 3
`trim`	ONI 2023 Baraj 2 Seniori: Problema 2
`Vantu`	AGM 2019, runda finala
`Village`	AGM 2019, runda nationala
`Weirdtree`	RMI 2021: Day 2, Problem 3
`XORsecv`	InfO(1) Cup 2024, Day 1
`Xorseq`	Algoritmiada 2022, Runda 4
`Zalmoxis`	BOI 2018
`Zelda`	Algoritmiada 2022, Runda 4