Chef and the string

general
1

Can anybody please explain this problem Chef and the String. I am not able to understand how the output is generated?

2

Subsequence is any sequence in string that you may get by skipping 0/more characters from any position
Example string : THE The possible subsequences are :

T,H,E,TH,TE,HE,THE.

Now whenever a subsequence is chosen , it is removed from the string.

All you have to do is find no of subsequences “CHEF” that you can find in given string.

3

my code is showing wrong ans… plzz can any one tell what is wrong in this…

https://www.codechef.com/viewsolution/8273089

4

@deeksha_garg Your code gives wrong answer for test case EFCH. It says 1 but answer is zero. Subsequence means you need to delete CHEF in a way that order of C,H,E,F is preserved. You can have a look at this

5

now also it is showing wrong answer:https://www.codechef.com/viewsolution/8279449

6

@deeksha_garg Your code is not producing the right answer for the first example testcase. Print out all values of a after each new char and you will probably see whats going wrong.