Difference between SKMP and ALLSUB

mnithinkk · August 18, 2020, 4:51am

Is there any difference between SKMP and ALLSUB?

I copy pasted my own code from ALLSUB from a prev content into SKMP and all I got is 100 pts

avi_9314 · August 18, 2020, 4:56am

Lol

code_symbol · August 18, 2020, 5:33am

But when I copy-pasted the SKMP code to ALLSUB it gave WA.

jay_1048576 · August 18, 2020, 5:33am

Here are the differences -

The variable names have changed. R became S here and S became P.
Constraints for Subtask 1 have changed.
Marks distribution between the two subtasks have changed (A very big difference indeed).
SKMP guarantees that an answer always exists while ALLSUB does not.
A solution for ALLSUB will surely pass SKMP but the reverse may not be true because of the 4th point.

jonson202019 · August 18, 2020, 5:48am

Input Sequence also

jonson202019 · August 18, 2020, 5:50am

Just change input sequence of 2 string, you will surely get an AC

jay_1048576 · August 18, 2020, 6:41am

Ya I forgot to mention that.

tarun_19 · August 18, 2020, 7:51am

The only difference is that we need to check the condition for impossibility. Rest is same.

admin · August 18, 2020, 10:29am

It is very unfortunate that none of us caught this earlier. We apologize for this oversight. But the contest remains rated as it is.