Weekly Contest 301

Congratulations to 4A!
2909 / 24327 = 11.96%
Finish Time: 1:03:06
Q1: 0:03:38 -> easy loop
Q2: 0:15:22 -> greedy and map
Q3: 0:57:14 -> greedy and map (use python) (take too much time)
Q4: 1:03:06 -> very straightforward math

Weekly Contest 301

5742 / 23561 = 24.37%
Finish Time: 1:26:18
Q1: 0:10:42 -> easy greedy (take too much time)
Q2: 0:27:39 -> priority queue (take too much time)
Q3: 1:16:18 (2 erros) -> crash car problem
Q4: N/A -> dynamic programming

Weekly Contest 286

2766 / 21339 = 12.96%
Finish Time: 1:10:21
Q1: 0:06:04 -> easy loop (take too much time)
Q2: 0:12:41 -> greedy
Q3: 1:10:21 -> modified binary search (slow implementation)
Q4: N/A -> dynamic programming

Weekly Contest 283

5044 / 19916 = 25.33%
Finish Time: 1:09:06
Q1: 0:10:51 -> easy loop (1 bug)
Q2: 0:17:31 -> easy loop + map
Q3: 0:44:06 -> binary search (4 bugs) (long long error)
Q4L N/A -> Trie tree or easy math

Weekly Contest 282

3828 / 15143 = 25.28%
Finish Time: 1:35:40
Q1: 0:02:36 -> easy loop
Q2: 0:05:17 -> map
Q3: 1:10:40 (5 errors) -> modified binary search
Q4: N/A -> dynamic programming