10195 - The Knights Of The Round Table

[Debashis Maitra]

Post your code including header file

always try to compile your code in gcc / g++ compiler
anyway I think you haven't included math.h header file

that may help you

[starrynight]

this time I include math.h header file...
but I got an WA?
Can anyone tell me why?
and..gcc &g++ is what?
thx!!

this is my code:

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main()
{
double a ,b ,c ,r ,s ,s2 ,area;

while (scanf("%lf %lf %lf",&a,&b,&c) != EOF)
{

s = ( a + b + c ) / 2.0;
area = sqrt(s * (s-a) * (s-b) * (s-c));
s2 = a + b + c;
r = 2.0 * area * (1.0 / s2);
printf("The radius of the round table is: %.3lf\n",r);



}

return 0;
}

[Debashis Maitra]

what will be your output if a=0,b=0,c=0 or S= 0
it should be 0.000

GCC is the compiler for compiling C
and
G++ are the compiler for compiling C++ in Linux
I suggest you to use it because you can use large memory in it and UVA use linux

[mohidul18]

#include<stdio.h>
#include<math.h>

void main(){
double a,b,c,r;
while(scanf("%lf %lf %lf",&a,&b,&c)){ r=(a+b+c)/2.0;
if(r)printf("The radius of the round table is: %.3lf\n",sqrt((r-a)*(r-b)*(r-c)/r));
else printf("The radius of the round table is: 0.000\n");}
}

[abdullah<cse du>]

mohidul18,

there are some problems in your code. When your program terminates?
Change this line

Code: Select all

while(scanf("%lf %lf %lf",&a,&b,&c))

to

Code: Select all

while(scanf("%lf %lf %lf",&a,&b,&c)==3)

This is for end of file.

Another problem is if

a==0.0 || b==0.0 || c==0.0

Then redius is 0.000. Not for r.

I have changed this two and gets your code accepted.

ABDULLAH.

[sijal]

try to use gcc and set compiler flags to -lm -lcrypt -O2 -pipe -ansi -DONLINE_JUDGE for c .
one time i have a compilation error and it was in comment lines .

[debugger]

What is wrong with my code?

Code: Select all

#include<stdio.h>
#include<math.h>

int main(){

    double a,b,c,s,r;
 

    while((scanf("%lf %lf %lf",&a,&b,&c))==3){

        if(a==0||b==0||c==0)
        r=0.0000;
        else{

        s=(a+b+c)/2.0000;
        r=sqrt((s-a)*(s-b)*(s-c)/s);
        }
        printf("The radious of the round table is: %.3lf\n",r);

        }

    return 0;

please somebody reply.

[sijal]

radius is more correct than radious

[mdpallob]

What is the wrong with this code?
Can anyone help me pls.............

#include<iostream>
#include<math.h>


using namespace std;


int main()
{
double a,b,c;

while(cin>>a>>b>>c)
{
if(cin.eof())
break;

if(a!=0 && b!=0 && c!=0)
{
double x=(a+b+c)/2;
float r;
x=sqrt(((x-a)*(x-b)*(x-c))/x);

cout.precision(4);
cout<<"The radius of the round table is: "<<x<<"\n";
}

else
cout<<"The radius of the round table is: 0\n";
}


return 0;
}

[adnan_iut]

Whenever you find the radius zero you should output 0.000 Not just 0

[mdpallob]

adnan_iut -------thank u for reply. but i still get wrong answer. here is the code with corrected 0.000



#include<iostream>
#include<math.h>


using namespace std;


int main()
{
double a,b,c;

while(cin>>a>>b>>c)
{
if(cin.eof())
break;

if(a!=0 && b!=0 && c!=0)
{
double x=(a+b+c)/2;
float r;
x=sqrt(((x-a)*(x-b)*(x-c))/x);

cout.precision(4);
cout<<"The radius of the round table is: "<<x<<"\n";
}

else
cout<<"The radius of the round table is: 0.000\n";
}


return 0;
}

[thnkndblv]

It's some inputs and outputs...

Input:
0.0 0.0 0.0
1.0 1.0 1.0
1.0 1.0 0.0
1.0 0.0 1.0
0.0 1.0 1.0
3.1416 3.1416 3.1416
1000000.0 1000000.0 1000000.0
1000000.0 500000.0 500000.0
0.1 0.1 0.1
3 4 5
30 40 50
300 400 500
3000 4000 5000
30000 40000 50000
300000 400000 500000

Output:
The radius of the round table is: 0.000
The radius of the round table is: 0.289
The radius of the round table is: 0.000
The radius of the round table is: 0.000
The radius of the round table is: 0.000
The radius of the round table is: 0.907
The radius of the round table is: 288675.135
The radius of the round table is: 0.000
The radius of the round table is: 0.029
The radius of the round table is: 1.000
The radius of the round table is: 10.000
The radius of the round table is: 100.000
The radius of the round table is: 1000.000
The radius of the round table is: 10000.000
The radius of the round table is: 100000.000

[shuvokr]

I am new in java...
why my java code got WA ....
Code ::

Code: Select all

import java.util.Scanner;
import java.math.BigInteger;
public class Main
{
    public static void main(String args[]) 
    {
        Scanner s = new Scanner(System.in);
        double a, b, c, r;
        int sk;
        while(s.hasNext())
        {
            a = s.nextDouble();
            b = s.nextDouble();
            c = s.nextDouble();
            if(a == 0 && b == 0 && c == 0)
                System.out.println("The radius of the round table is: 0.000");
            else
            {
                r = a + b + c;
                r /= 2;
                a = r - a;
                b = r - b;
                c = r - c;
                a = a * b * c;
                r = Math.sqrt(a / r);
                r = r * 1000;
                sk = (int)r;
                r = (double)sk / 1000;
                System.out.println("The radius of the round table is: "+r);
            }   
        }
    }
}

[brianfry713]

Try the I/O in the post before yours. You should always print 3 digits after the decimal point.

[lighted]

And the special case is meaner (= even more unrealistic) than having one side length equal to zero. I hate these descriptions with a real life story behind them and then special cases that are so non-real-life. That's simply crap. My personal opinion. I don't like it when somebody purposely fools me.

<font size=-1>[ This Message was edited by: Stefan Pochmann on 2002-03-25 19:37 ]</font>

I agree with him.