n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
0.7 months
1.4 months
n/a
2.0 rounds
2.0 reports
very difficult
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
0.9 months
1.0 months
n/a
2.0 rounds
2.0 reports
easy
2.9 months
3.9 months
n/a
2.0 rounds
1.8 reports
moderate