11152 - Colourful Flowers

[temper_3243]

I found the circumcircle radius and incricle radius but i am getting WA

Code: Select all

 ACC

[little joey]

Never mix doubles and integers!
Declare a, b and c as doubles, and read them that way, and you'll get accepted.

Then delete your code.

[Spykaj]

I don't agree with little joey, my variables are:

Code: Select all

int a,b,c;
double p,P,C1,C2,r,R;

and I have ACC ;]

[jan_holmes]

I think it depends how we implement this integer to the program...

Code: Select all

int n = 5;
double ret = 0;
ret = n/2;

is different with

Code: Select all

int n = 5;
double ret = 0;
ret = n/2.0;

Sometimes we forgot with this and makes our program totally wrong... (It also happened to me many times...)

[fpavetic]

there can be cases where sum of length of two sides is less than length of third side. try this case: 1 2 1000

[jurajz]

I don't think, that's so... My AC program don't assume this. For input 1 2 1000, I have runtime error 207 (invalid floating point operation), but in judge it is OK.

[emotional blind]

there can be cases where sum of length of two sides is less than length of third side. try this case: 1 2 1000

I dont think so. I got Accepted without checking this.

[fpavetic]

there can be cases where sum of length of two sides is less than length of third side. try this case: 1 2 1000

I dont think so. I got Accepted without checking this.

i got accepted after checking that

[emotional blind]

Strange
What is your outout in that case?

[fpavetic]

Strange
What is your outout in that case?

785398.1634 0.0000 0.0000

[little joey]

I don't agree with little joey, my variables are:

Code: Select all

int a,b,c;
double p,P,C1,C2,r,R;

and I have ACC ;]

Well, of course you can mix them, but you have to be extra careful when you do. In temper's code:

Code: Select all

/* inradius */
      r2 =
   0.5 * sqrt (((b + c - a) * (c + a - b) * (a + b - c)) / (a + b + c));

the division is actually an integer division, which leads to an unexpected error.
If you make it a habbit never to mix variables of different types, this kind of error will not slip your attentention.
My remark was meant as an advise, not as a law

[emotional blind]

Strange
What is your outout in that case?

785398.1634 0.0000 0.0000

How can your input is valid??
It is totally impossible to take three point from the boundary of any circle that produce such impossible triangle.. so surely this kind of input is not there in judge data..

Thanks

[temper_3243]

Joey,
I got accepted when i changed the a,b,c's to double and read them like that.
or
But when i do 1.0 *(a+b+c) isn't it valid. I still got WA. Everywhere else double promotion takes place except, Well the test case contains a case where int overflow happens

sqrt ((a + b + c) * (b + c - a) * (c + a - b) * (a + b - c)); // typecasted to double



r2 =
0.5 * sqrt (((b + c - a) * (c + a - b) * (a + b - c)) / (1.0*(a + b + c)));

[DP]

Code: Select all

........accepted.......

[sohel]

PI = acos(-1);