This is invalid test, but anyway

10
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00
00:00:00

Answer:
00:13:58
00:13:58
00:13:58
00:13:58
00:13:58
00:27:56
00:27:56
00:27:56
00:27:56
00:27:56

1
23:59:59

->

00:02:47

I get Wa6. I don't know my error. Give me some test please.

Edited by author 07.01.2017 13:53

if the "ss" answer equal 60,
update to 0 and change mm = mm+1

:)

Maybe, you know some tricks?

please give a good test

What could be in this test? Can you give me some tests?

There are some equal times in test, but

"All students wake up at the different moments but during the same day, i.e. all times different and between 00:00:00 and 23:59:59"

Check it, please.

I don't understood one thing. So look at this test
2
00:00:00
00:00:00
In fact teakettle will be ready to 335.2 second. But if we round this answer, it will be 335, i.e. 00:05:35. And it seems that this correct answer. But to this time teakettle will not be ready!

And this test
3
00:00:00
00:00:00
00:05:35
And what should we think?
1) The teakettle is ready to 00:05:35, so in this time it will be EMPTY and the third student will BEGIN to boil water in this time 00:05:35?
So answer will be
00:05:35
00:05:35
00:08:23
2) Or we should think that in this situation teakettle will be ready EXACTLY in 335.2 second and the teakettle will be not empty and the third student just ADD water in 00:05:35?
So answer will be
00:08:23
00:08:23
00:08:23

1. Precision of 1e-10 seconds is enough to compare boil-time with wake-time.

2. If some guy wakes up at the same time the water is ready (I mean exact equality up to precision), the water is disposed to cups first. So he will fill up an empty tank in this case.

3. Output times after rounding them UP. It is not quite clear from problem statement, but it's the closest guess if we assume that drinking can start only at integer number of seconds. At least this approach gives AC.

4. Output rounded times modulo 24:00:00 (i.e. if cup is ready the next day, subtract 24 from HH).

Please add test like this:
3
00:00:00
00:00:00
00:05:35

Something awful! Please give any tests!!!

The problem says that they wake up in the same day (but in different time). But what if some dummies will have to wait until the midnight passes? I can output the time then, but it will lead to misunderstanding. Is it guaranteed, that they all shall be able to drink in the same day?

Point 2:
  "If another student boils water already, he should add 200 ml of water in the teakettle"

Point 3:
  "If another student boils water and the teakettle is full already ..."

   And what is in the case if several students boil water already? I think I should read not "another student boils" but "the other students boil". Am I right?

Edited by author 23.03.2005 21:48

Problem statement says " All students wake up at the DIFFERENT moments but during the same day" but in test #8 there are students that wake up simultaneously!!!

Time is different?
    for(i=0;i<400000;i++){ //for each sec
        if(m!=0.0 && i!=0){
            dt=((100.0-T)*C*m)/P;
            if(dt>1.0)
                dt=0.0;
            T+=P*1.0/(C*m);
        //    dt=0.0;
        }
        if(fabs(T-100.0)<0.0000001 || T>100.0){
            //zakipel
            j=(int)(m/200.0);
            out(i,j);
            if(MWait<=1000.0){
                if(MWait==0.0){
                    m=0.0;
                    T=20.0;
                }
                else{
                    m=MWait;
                    MWait=0.0;
                    T=20.0;
                    T+=P*dt/(C*m);
                }
            }
            else{
                m=1000.0;
                MWait-=1000.0;
                T=20.0;
                T+=(P*dt)/(C*m);
            }

        }
        if(time[i]==1){//add new people
            if(m==1000.0){
                MWait+=200.0;
            }else{
        //        printf("Dolili ");
        //        out(i,1);
                T=(m*T+4000.0)/(m+200.0);
                m+=200.0;
            }
        }
Sorry for my English.