problem B : Problem - B - Codeforces
video Link :B. Subsequence Hate | Codeforces Round #646 (Div. 2) - YouTube
problem C : Problem - C - Codeforces
video Link :C. Game On Leaves | Codeforces Round #646 (Div. 2) - YouTube
problem B : Problem - B - Codeforces
video Link :B. Subsequence Hate | Codeforces Round #646 (Div. 2) - YouTube
problem C : Problem - C - Codeforces
video Link :C. Game On Leaves | Codeforces Round #646 (Div. 2) - YouTube