m trying a lot and am able to pass all self generated test cases…yet i get wa each and every time…i am done with the programming .i just need a little help on sub tasks…
What you can do is to generate some random string of length 20 let say, invoke your algorithm for each L and R possible and check, whether this is the same as the brute force solution results - I believe if you do that, you’ll find the problem…
That idea did caught a bug in the solution
used big integer and resolved the problem…now i am getting tle with 2.01 sec…removing biginteger haunts me with a WA…any further help ??
sub string 00 will give 3 as answer ??
There is no need of bigint afaik
Yes (and some mess, because too short)…