- I have just learned somethings new :
Toposort: http://en.wikipedia.org/wiki/Topological_sorting O(|V| + |E| )
... Sorry for my english :D

Pls tell me what does author of this problem mean..
If all delegates are in different rooms then we can't use less than 4 connections to achieve the goal in sample input. What 3 connections can we use to do it?
Do we need all M pairs to be in answer?
I still can't solve it because statement is too loose for me.

Please give me tests. Always WA #3.
I'm writing in Go and using float64 for the numbers.

O(sqrt(2 * N))
I have:
A = (2 * N - P * P + P ) / ( 2 * P )
and P = [1, 2, 3, ..., sqrt(2 * N) + 3] :D
I got AC ...

Got WA2. please respond.

See this test:

6
2 2 2 3 3 3

Bad answer: 5
Good answer: 3

Maybe new problem with increase S,K)

5 500
250 250 250 250 250
-------------------
22288580

I've sent the same solution using c++ and ruby - and ruby's version works 8 times slower than c++ solution and hardly passes TL (however all solutions were accepted, working time 0,125 vs 0,984 sec). I hope it might be caused by the old interpreter's version - can we use any newer version?

Can i get test case 59?

the problem says " Moreover, they check only that the sum of all numbers entered since the last test matches the expected one." Thus should the new number entered in the test to check whether there is a big bang or not? If we have to take into account last input i.e. k value the the problem statement is incorrect. Please could someone explain this.

Edited by author 10.09.2011 18:56

here's my text:

program Project2;
var a,b,c,d:longint;
begin
 readln (a,b,c,d);

 while c>a do begin
a:=a+b;
c:=c-d;
  end;
if c=a+b then
   writeln (c)
else writeln (a);

end.


what's the problem??? help me please

I have Python 3.4.3 on my PC and when I run the program, this happens:

input: 3
       4
       5
       3
output: 5
        4
        3

I am certain that is the correct answer, but the judge says that it is incorrect

Ordering of start can be exploited to find solution.

Edited by author 22.03.2015 03:35

Viewing other authors solutions have many benefits for viewer:
- Learning clean coding style.
- Learning new ways to solve the problem.
- Learning tricks from people who solved the problem using similar idea.
- Checking if tests are weak by exploring weaknesses in other people code.

The memory limit is terrible!
so small!

Increase it plz!!!

Edited by author 21.03.2015 14:43

My program works wrong when N = 10^K, but gets AC! Please add test with such N.

What is test #3?