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
1 Adunare InfoPro, Phase III, Group A
2 Aeroport Lot 2023 Baraj 2 Seniori: Problema 2
3 Akanemat AGM 2019, runda nationala
4 Alambicare Summer Challenge 2019
5 Aliniate Algoritmiada 2019 Runda Finala
6 Apa Lot 2023 Baraj 1 Seniori: Problema 2
7 Aranjare ONI 2018 XI-XII: Ziua 1, Problema 1
8 Arboras RMI 2020: Day 2 Problem 3
9 ArboreX Lot 2020 Baraj 1 Seniori: Problema 1
10 Arbquery Science On 2021 XI-XII: Problema 2
11 Arbset Science On 2021 Baraj: Problema 3
12 Arbsumpow ONI 2021 Baraj 1 Seniori: Problema 2
13 Arugaktus AGM 2019, runda nationala
14 Babel ONI 2025 Baraj 2 Seniori: Problema 2
15 Beyond the Wall Winter Challenge 2020
16 Bignum Science On 2021, clasa 7-8
17 Bisuma Algoritmiada 2019 Runda Finala
18 Brperm RMI 2020: Day 1 Problem 2
19 Cangrena Lot 2018 Baraj 1 Seniori: Problema 2
20 Caterinca AGM 2019, runda finala
21 Cheerleader infO(1) Cup 2020
22 Cifre ONI 2025 Baraj 2 Seniori: Problema 1
23 Circles RMI 2023: Day 2 Problem 1
24 Circuit Lot 2025 Baraj 3 Seniori: Problem 2
25 Cmmdcgame Winter Challenge 2020
26 Cntlex Science On 2021, clasa 7-8
27 CntSubsirMax InfoPro, Phase II, Group A
28 Colorfulconflict Algoritmiada 2019 Runda PreONI
29 CoolRot infO(1) Cup 2021, International Round
30 Copii3 Algoritmiada 2018 Runda Maraton
31 Countperm Algoritmiada 2022, Runda 3
32 Craciun Algoritmiada 2018 Runda Maraton
33 Cubeon AGM 2019, runda nationala
34 Date infO(1) Cup 2022, Day 2
35 Diferente ad-hoc
36 Dirijor Lot 2023 Baraj 3 Seniori: Problema 1
37 Divisors InfO(1) Cup 2025, Day 2
38 Djok Algoritmiada 2019 Runda Finala
39 Droom AGM 2019, runda finala, ziua 1
40 dulciuri OJI 2022 XI-XII: Problema 1
41 Dupadealuri Algoritmiada 2019 Runda Finala
42 expresii ONI 2021 X: Problema 3
43 Football infO(1) Cup 2020
44 Gard6 Algoritmiada 2018 Runda Finala
45 Gardening RMI 2021: Day 1, Problem 1
46 Gcdseq Algoritmiada 2022, Runda 2
47 ghinion Lot 2022 Baraj 3 Seniori: Problema 2
48 Hiperquery Science On 2021 XI-XII: Problema 3
49 Hipersir Science On 2021 XI-XII: Problema 1
50 Hipersum Science On 2021 Baraj: Problema 2
51 Jumpy infO(1) Cup 2021, International Round
52 Kxorbonacci Algoritmiada 2022, Runda 1
53 Leftmax OJI 2020 X: Problema 3
54 Lucky7 Empowersoft 2019
55 Matriceechilibrata Algoritmiada 2022, Runda 2
56 Matsum InfoPro, Phase IV, Group A
57 Mdluffxor AGM 2019, runda finala,ziua 1
58 minimize Lot 2022 Baraj 2 Seniori: Problema 1
59 Minmaxtree BOI 2018
60 Misakatelefon AGM 2019, runda finala
61 Mister OJI 2026 X
62 Monede InfoPro, Phase I, Group A
63 Nespus Algoritmiada 2018 Runda Maraton
64 NiceSet infO(1) Cup 2022, Day 1
65 Niciomare Algoritmiada 2019 Runda Maraton
66 Nines InfO(1) Cup 2025, Day 1
67 Nopolynolife AGM 2019, runda nationala
68 Noprimenolife AGM 2019, runda finala
69 Noxornolife AGM 2019, runda finala, ziua 1
70 Palatulvoltaic Algoritmiada 2019 Runda Maraton
71 Permut EGOI selection camp 2026, Day 2
72 Powerful AGM 2019, runda finala
73 Present RMI 2021: Day 1, Problem 2
74 Primesato AGM 2019, runda finala
75 pscfft ONI 2018 Baraj Seniori: Problema 3
76 pswap ONI 2021 Baraj 2 Seniori: Problema 2
77 Saumat Lot 2021 Baraj 3 Seniori: Problema 1
78 Secvzerounu Romanian Collegiate Programming Contest 2019
79 Sequences infO(1) Cup 2023, Day 1
80 Seqval Science On 2021, clasa 9
81 Shiroeseq AGM 2019, runda nationala
82 Siclam Lot 2024 Baraj 3 Seniori: Problema 3
83 Sirag ONI 2025 X: Problema 3
84 sortall Lot 2018 Baraj 3 Seniori: Problema 1
85 Sotron2 Science On 2021, clasa 7-8
86 Stars AGM 2019, runda finala
87 Subiectul I Lot 2024 Baraj 4 Seniori: Problema 1
88 Table Tennis infO(1) Cup 2020
89 Tanakagame Empowersoft 2019
90 Tarzan Cupa SEPI 2023 Seniori: Problema 3
91 To be, xor not to be RMI 2023: Ziua 2, Problema 3
92 Trapez Lot 2025 Baraj 2 Seniori: Problem 3
93 Trees infO(1) Cup 2026, Day 2: Problem 1
94 trenbus Lot 2018 Baraj 3 Seniori: Problema 3
95 tricolor ONI 2018 XI-XII: Ziua 1, Problema 3
96 trim ONI 2023 Baraj 2 Seniori: Problema 2
97 Vantu AGM 2019, runda finala
98 Village AGM 2019, runda nationala
99 Weirdtree RMI 2021: Day 2, Problem 3
100 XORsecv InfO(1) Cup 2024, Day 1
101 Xorseq Algoritmiada 2022, Runda 4
102 Zalmoxis BOI 2018
103 Zelda Algoritmiada 2022, Runda 4