5
14
easy
0
6
10
easy
0
2
9
easy
0
5
4
easy
0
0
3
--
20
0
1
easy
0
0
0
medium
0
21
38
easy
0
11
19
easy
8
1h 10min
12
6
medium
0
9
7
easy
0
6
6
easy
6
1h 30min