Codeforces 4 Codeforces Round 974 (Div. 3) 2024/10/11 Codeforces Round 973 (Div. 2) 2024/09/30 Codeforces Round 972 (Div. 2) 2024/09/18 Codeforces Round 969 (Div. 1, Div. 2) 2024/09/06