Daily Codeforces
Educational Codeforces Round 38（Div2） solved 3 of 7 rk 863
Educational Codeforces Round 52（Div2） solved 3 of 7 rk 2079
Good Bye 2018 solved 4 of 8 rk2218
Codeforces Round #683 (Div. 2, by Meet IT) solved 3 of 7 rk2157 (1461 → 1444)
Codeforces Round #654 (Div. 2) solved 3 of 6 rk1296 （1461 → 1498）
Educational Codeforces Round 98 (Rated for Div. 2) solved 4 of 7 rk700（1498 → 1624）
Codeforces Round #685 (Div. 2) solved 4 of 7 rk1217（1624 → 1685）