Contest 2 - Upsolve 

Contest Link: codeforces.com...
Timeline:
0:00:19 Problem A
0:12:44 Problem B
0:17:20 Problem C
0:28:09 Problem D
0:38:27 Problem E
0:46:01 Problem F
0:47:53 Problem G
1:12:20 Problem H
1:16:27 Problem I
1:48:14 Problem J