4 Kyu
usedchang

Country/Region	China
Birth Year	2006
Codeforces ID	usedchang

Contest Status

• Algorithm
• Heuristic

Rank	10321st (Top 8.2%)
Rating	1229
Highest Rating	1239 ― 4 Kyu (+161 to promote)
Rated Matches	73
Last Competed	2026/10/03

Competition History Last Contest Result