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JohnWatson
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JohnWatson
Ukraine
Ukraine
Joined Nov 9, 2024
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Problems8
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2025
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JohnWatson solved problem Colorful String (#249) on 3 attempt24 days ago
JohnWatson solved problem Colorful Balls (#248) on 2 attempt24 days ago
JohnWatson solved problem Grandchildren (#247) on 2 attempt25 days ago
JohnWatson solved problem Parallelepiped (#246) on first attempt25 days ago
JohnWatson has joined contest UJGOI 2024. Vidbir. Day 125 days ago
JohnWatson solved problem What the ZNO leads to... (#6) on 2 attempt29 days ago
JohnWatson solved problem Difficult times (#5) on 5 attempt1 month ago
JohnWatson solved problem Transportation Dilemma (#4) on first attempt1 month ago
JohnWatson solved problem Petryk and the exam (#3) on first attempt1 month ago
JohnWatson solved problem Mean arithmetic (#2) on first attempt1 month ago
JohnWatson solved problem Debts (#1) on first attempt1 month ago
JohnWatson has joined contest UOI 2023. I stage1 month ago
JohnWatson solved problem Christmas Eve (#365) on 8 attempt2 months ago
JohnWatson solved problem Successful Investor (#364) on 9 attempt2 months ago
JohnWatson solved problem Sakurako's Pet (#388) on first attempt4 months ago
JohnWatson has joined contest UJGOI 2025. Vidbir. Day 34 months ago
JohnWatson solved problem Sakurako's Not Favorite Toy (#363) on 2 attempt11 months ago
JohnWatson solved problem Sakurako's Favorite Toy (#362) on first attempt11 months ago
JohnWatson solved problem Coordinates (#361) on first attempt11 months ago
JohnWatson solved problem Rook (#360) on first attempt11 months ago
JohnWatson has joined contest UJGOI 2025. Vidbir. Day 111 months ago
JohnWatson solved problem Sakurako is Late (#348) on 2 attempt12 months ago
JohnWatson solved problem Balls and Bins (#347) on first attempt12 months ago
JohnWatson solved problem Cook the Homework (#346) on first attempt12 months ago
JohnWatson solved problem Coordinates (#345) on first attempt12 months ago