Обсуждение @ 1427. SMS @ Timus Online Judge

Dmitry 'Diman_YES' Kovalioff I have just reloaded all the tests from 17 till the last one (+) [11] // Задача 1427. SMS 12 фев 2006 17:07

That tests were no terminated by the end of lines indeed because of force majeure... Now the new rules for tests are being developed to prevent such things in the future. Anyway we must apologize for it.

If you got WA(17), you may run your program again.

Edited by author 12.02.2006 17:11

Love_** why not rejudge the contest? :'( [10] // Задача 1427. SMS 12 фев 2006 17:10

Dmitry 'Diman_YES' Kovalioff SafeBird, could you check if the tests are correct now? (-) [9] // Задача 1427. SMS 12 фев 2006 17:13

Safe Bird yes, AC now. (that one is my TestID)..... [8] // Задача 1427. SMS 12 фев 2006 17:17

I started to code G at the beginning of the contest...
and I soon found it wa on 18......
my teammate starts to help me find the bug....

it was until 4hours after the beginning, my teammate uses Pascal and ACed.........

:'( if i have aced G at the beginning, things would possibly change:(

Dmitry 'Diman_YES' Kovalioff Well... (+) [7] // Задача 1427. SMS 12 фев 2006 17:23

17-th test was the first test that had not eoln, but your program passed it. If the problem appeared because of eoln, it could fail on 17-th test. Could you explain it?

Edited by author 12.02.2006 17:25

Safe Bird I don't know it exactly.(+) [6] // Задача 1427. SMS 12 фев 2006 17:29

have you read the other post of mine?

if i use:
    for (;;)
    {
        if (feof(Fin)) break;
        char ch=fgetc(Fin);
        if (ch=='\n') break;
...
}
i will pass 17, but if i use:
        char ch=fgetc(Fin);
        if (ch=='\n') break;
i will TLE on 17.

i don't know why my program passes 17, but failed on 18. you could see my submission, the original program will get AC.

Safe Bird i am currently on icq:162109001.(-) [1] // Задача 1427. SMS 12 фев 2006 17:34

Dmitry 'Diman_YES' Kovalioff Re (+) // Задача 1427. SMS 12 фев 2006 17:50

It is beyond my rights to look at your submission and it is beyond my power to rejudge the contest. Vladimir Yakovlev will make a decision about this problem.

I do not use ICQ :( But one day I will.

Edited by author 12.02.2006 17:51

Vladimir Yakovlev (USU) Re: I don't know it exactly.(+) [3] // Задача 1427. SMS 12 фев 2006 18:02

these statements are not useful:

if (feof(Fin)) break;
char ch=fgetc(Fin);
if (ch=='\n') break;

use should use these:

char ch=fgetc(Fin);
if (ch=='\n' || ch==EOF) break;

BECAUSE
feof(FILE*) returns true iff the end-of-file was already read. So you terminate input string with character 255.

Tests were correct, but with no eoln before oef. You considered such situation but made a mistake.

Safe Bird But [2] // Задача 1427. SMS 12 фев 2006 21:11

"char ch=fgetc(Fin);
if (ch=='\n' || ch==EOF) break;"

is against the problem description!

i think this problem should be rejudged, since you have said:
"The advertisement is terminated by the end of line."
in the description!

Edited by author 12.02.2006 21:13

Vladimir Yakovlev (USU) But why did you use feof? [1] // Задача 1427. SMS 13 фев 2006 01:23

Safe Bird see in(+) // Задача 1427. SMS 13 фев 2006 13:43

I don't know much difference between feof and ch==EOF, BUT

the problem has said that input is terminated by '\n'! I thought there will be no difference between using that line or not!!!

you could contact "Dmitry 'Diman_YES' Kovalioff", the test cases 17,18,... are indeed wrong during the contest.
(now they are okay)

Обсуждение задачи 1427. SMS