OJ Board

Very good method is using gets method to read whole line input not scanf(%s\n",st).
Then you remove preceded and additional spaces.

WELCOME BACK http://ACM.TIMUS.RU !

I havent donate any Euro because I havent any type of card. 10 Euros are not so much for donating this good system.
But Is it some other type to donating money? Could I send some money by post office in letter?
I missed some good help for donate money.
And I think that many people look very often ...

Congratulations Wai. It is good to see fight about first-forth position. Very interesting. Free time is important for all solvers of ACM.

Maybe you forgot type JAVA in JUDGEID: as language in which you are programming.

Or you can try as *luna* wrote :
I changed little bit.
x:=3.1245114411;
write(x:0:2); for 3.12
and
write(x:0:3); for 3.125

I dont know if anyone will help beginners and newcomers with section Howtos, because many of them dont know how to send problems.
I think it is very important problem!!!

Thanks for no answer.

i am using C.
i've tried ""while (scanf("%d",&N) == 1) { printf("read %d\n",N); }"", but seems it doesn't work... even i input nothing and press enter, it doesn't stop.
how to use feof (sdtin)??
i only how to use feof(file)...


#include <stdio.h>

int N;

int main()
{
while (scanf("%d",&N)==1 ...

ywceric wrote:as u see, the input method of most of the task are in many lines.
how can i know when the input ends?

Most of problems have end of input in specification. Very often is end of file as number 0(zero) or end of file. You have to check and control end of input in your program.

Try change to

I think that Input and Output are very good in test case on my opinion. Because we can practise more to test all problems because its very good training for catching the exceptions in Object programming.
Because very much problems are try catch finally in real software appliacation. We cannot need ...

I found some bad links on Problemset page http://acm.uva.es/problemset/ in section HOWTOs:

Submit
Submit by eMail
Submit Pascal
Submit Java
OJ Answers
Write Source Code

I think that links are from old board. Could anybody(admin) change these links please? It's very good links for beginners and ...

I spend 12 hours of my life to fix a mistake of this problem. I got every time Presentation Error. I solved this problem correctly. But I want Accepted answer not Presentation Error. I use method by array and spaces, ! and \n(new line) and every time I got only Presentation Error. I used 132 ...