Vectors

[artiomso]

done

[ne555]

for(int x = 0; x <= subjectCodes.size(); x++ ) is out of bounds.

[artiomso]

I know that but I don't get how to fix that problem :/

[cire]

It's a pretty simple fix. Change the control expression of the loop(s) so that you don't use an out of bound index.