In G tutorial it should be, x >= a⋅k+b⋅(n−k) y >= a⋅(n−k)+b⋅k and similarly, the next two equations will be changed accordingly. Supermagzzz correct it.

In problem E, "You are asked to rearrange the patterns in such a way that the first pattern the j-th string matches is p[mtj]." doesn't clearly state that index mtj is referred for initial arrangement.It should have been stated clearly.

Getting wrong ans on testcase 70 in problem G, any hints??