Why is it showing SIGTSTP?

Link to code :
https://www.codechef.com/viewsolution/49953239

When I run it on codechef, it is showing SIGTSTP.
Please tell why…

It goes into an infinite loop for the following test input:

1
5 2
01000

Edit:

And on the sample test input.

2 Likes

Got my mistake.
https://www.codechef.com/viewsolution/49976069

The sample cases are getting right now, but submission is still wrong.
Which testcase is going wrong?