Problems
Arena
Professional Problem-solver
Solve 500 problems
Solve 500 problems
6.4K
Skilled Problem-solver
Solve 200 problems
Solve 200 problems
31K
Apprentice Problem-solver
Solve 100 problems
Solve 100 problems
65K
Beginner Problem-solver
Solve 50 problems
Solve 50 problems
103K
Newbie Problem-solver
Solve 10 problems
Solve 10 problems
149K
Level 1 Sprout
Solved problems for 2 days in a row
Solved problems for 2 days in a row
122K
Semi-Game Cup 2 (2021)
Solved 1 or more problems in Semi-Game Cup 2
Solved 1 or more problems in Semi-Game Cup 2
108
2020 with BOJ
Solved problem A within the competition time of Good Bye, BOJ 2020!
Solved problem A within the competition time of Good Bye, BOJ 2020!
337
Beta Contributor
Contributed once or more between July 13, 2019 and June 4, 2020
Contributed once or more between July 13, 2019 and June 4, 2020
442
21st National Assembly Election (2020)
Solved the 21st National Assembly Election problem (#18891) by April 21, 2020
Solved the 21st National Assembly Election problem (#18891) by April 21, 2020
56
The Real Final Ghudegy Cup 2 (2020)
Solved problem A+B (MC) within the competition time of the Real Final Ghudegy Cup 2 (2020)
Solved problem A+B (MC) within the competition time of the Real Final Ghudegy Cup 2 (2020)
54