no longer ignore errors in method union of DisjointSet
#11028
| Job | Run time |
|---|---|
| 1h 28m 43s | |
| 1h 28m 43s |
union of DisjointSet
#11028
| Job | Run time |
|---|---|
| 1h 28m 43s | |
| 1h 28m 43s |