Hello all, I am kind of new to java so pardon me if this is stupid. I am trying to solve this problem spoj.pl/problems/ELLIPSE/ in java but i am consistently getting error message "
runtime error (NZEC)". Could some one please tell me how to solve this.
Thank You
Mukesh Tiwari
/*
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* and open the template in the editor.
*/
//package determinant_recur;
import java.util.*;
import java.io.*;
import java.lang.Math.*;
/**
*
* @author user
*/
public class Main {
private static long recur(long[][] M,int n)
{
if(n==2) return M[0][0]*M[1][1]-M[0][1]*M[1][0];
long sum=0;
int r,c,sign=1;
for(int i=0;i<n;i++)
{
long[][] tmp=new long[n-1][n-1];
r=0;
for(int j=1;j<n;j++)//always start with next row
{
c=0;
for(int k=0;k<n;k++)
{
if(k==i)continue;//leave ith column
tmp[r][c]=M[j][k];
c++;
}
r++;
}
sum+=sign*M[0][i]*recur(tmp,n-1);
sign*=-1;
}
return sum;
}
public static void main(String[] args) {
while(true)
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s=null;
int c=0;
try
{
s=br.readLine().trim();
if(s.isEmpty())break;
s=s.replaceAll("\\s+"," ");
String[] t=s.split(" ");
for(int i=0;i<t.length;i++)t[i].trim();
long[] x=new long[5];
long[] y=new long[5];
for(int j=0;j<10;j+=2)
{
x[c]= Integer.parseInt(t[j]);
y[c++]=Integer.parseInt(t[j+1]);
}
// for(int i=0;i<5;i++) System.out.println(x[i]+" "+y[i]);
long[][] M=new long[5][6];
long[] coff=new long[6];
double A,B,C,D,E,F;
for(int i=0;i<5;i++)
{
M[i][0]=x[i]*x[i];
M[i][1]=x[i]*y[i];
M[i][2]=y[i]*y[i];
M[i][3]=x[i];
M[i][4]=y[i];
M[i][5]=1;
}
int r_1,c_1;
for(int i=0;i<6;i++)
{
long[][] tmp=new long[5][5];
r_1=0;
for(int j=0;j<5;j++)
{
c_1=0;
for(int k=0;k<6;k++)
{
if(k==i)continue;
tmp[r_1][c_1]=M[j][k];
c_1++;
}
r_1++;
}
coff[i]=recur(tmp,5);
// System.out.print(coff[i]+" ");
}
//System.out.println();
A=coff[0]*1.0;
B=0.5*coff[1];
C=coff[2]*1.0;
D=0.5*coff[3];
E=0.5*coff[4];
F=coff[5]*1.0;
if(A*C<=B*B)System.out.println("IMPOSSIBLE");
else
{
double Area=Math.PI*((A*E*E-2*B*D*E+C*D*D) - F*(A*C-B*B))/Math.pow((A*C-B*B),1.5);
System.out.println(Math.abs(Area));
}
}catch (NumberFormatException e){}
catch (EOFException e){}
catch(IOException e){};
}
}
}
