Clarifications (See all..)
[E. Bran Has Vision] what is Time limit exceeded?
It means that the program didn't stop running before the given Time Limit. I.e: for problem E the program must stop on or before 1 sec.
[E. Bran Has Vision] "The input ends on EOF( End Of File)" ---what does it mean?
There can be multiple test cases and when there will be no more inputs(test cases) you'll have to stop your program after answering all the test cases.
[B. Blind Fan] what is Compilation Error
It means that your code is not syntactically correct. Thus, it can't compile the code.
[D. Gangs of Blazing] What is runtime error?
If your solution crashes while running the program, it'll produce a "Runtime Error" verdict. Also, read the problem statement carefully.