Question

my program is saying run time exceed why

Answer 1

There is probably a timer on the server side to prevent hanging programs to hog resources indefinitely.

If you haven't written something that's supposed to run for a long time, then you indeed may have ended up in an endless loop. Try adding log messages and find out where your code hangs.

If you intended to write something that runs for a long time, you can try to put something on the standard output to see if that resets the timer and allows your code to run longer.

If you can share your code, please do, so we can give you a more specific answer.

Answer 2

You received a TLE (Time Out Deadline) because your code ran too slowly, exceeding the program's execution time limit. If you're in an exam, you should adjust your code to remove unnecessary elements.