QTREE runtime error (NZEC) what does it mean?

[telgniw]

Hi, I'm a newbie here, and I'm also new to Python.
I just tried TEST and got accepted, so I went on and tried QTREE but got RE with NZEC.

Could anyone tell me what does NZEC mean or where to find the meaning of these abbreviations?

I searched in the forum but I just found something like missing "import".
I also found that no one got Acc using Python in QTREE ...

p.s. I tried the sample input and some other simple testcases and it seemed to be okay.

Thanks in advanced for any reply

[numerix]

NZEC = Non Zero Exit Code, i.e. termination of your program is caused by a runtime error.
There are some reasons for that:
- accessing an unvalid list index
- using a non-existing dictionary key
- division by zero or other mathematical erros
- missing imports
- using undefined variables
- etc.

According to QTREE:
If you look at the submissions, you can see the following:
There are more than 300 AC submissions until now, so it seems it isn't one of the very hard problems (or there exists a solution in the web ...).
If you look at the timelimit and the runtimes of the AC submissions you can see, that the fastest solutions in fast languages are about 1 s of runtime with a limit of 5 sec. Though I didn't try, I'm quite sure it won't be possible using python. You should try some other problems.

Nearly all problems with AC submissions < 0.03 s in fast languages you can solve with python. Good luck.

[telgniw]

Thanks again