fix: wrong answer of find_common_string (#969)
#1818
| Job | Run time |
|---|---|
| 53s | |
| 55s | |
| 51s | |
| 51s | |
| 51s | |
| 4m 21s |
find_common_string (#969)
#1818
| Job | Run time |
|---|---|
| 53s | |
| 55s | |
| 51s | |
| 51s | |
| 51s | |
| 4m 21s |