HDU 1006 Tick and Tick

import java.util.Scanner;
import java.math.BigDecimal;
public class Main{
public static double max(double a,double b,double c)
{
a=a>b?a:b;
a=a>c?a:c;
return a;
}
public static double min(double a,double b,double c)
{
a=a<b?a:b;
a=a<c?a:c;
return a;
}
public static void main(String [] args)
{
int i,j;
//double dsm[1444],dsh[1444],dmh[26];
double[] dsm=new double[1444];
double[] dsh=new double[1444];
double[] dmh=new double[26];
double d,sum,x,y;
double sm,mh,sh;
int []smf=new int[2];
int []mhf=new int[2];
int []shf=new int[2];
sm=3600.0000/59;
sh=43200.0000/719;
mh=43200.0000/11;
Scanner scan=new Scanner(System.in);
while (scan.hasNext())
{
d=scan.nextDouble();
if(d==-1)
{
System.exit(0);
}
sum=0;
x=0;
y=0;
dsm[0]=(10*d)/59;
dsh[0]=(120*d)/719;
dmh[0]=(120*d)/11;
dsm[1]=sm-dsm[0];
dsh[1]=sh-dsh[0];
dmh[1]=mh-dmh[0];

for (i=2,j=3;;i+=2,j+=2)
{
dsm[i]=dsm[i-2]+sm;
dsm[j]=dsm[j-2]+sm;
if (dsm[i]>43200&&dsm[j]>43200)
{
break;
}
}

for (i=2,j=3;;i+=2,j+=2)
{
dsh[i]=dsh[i-2]+sh;
dsh[j]=dsh[j-2]+sh;
if (dsh[i]>43200&&dsh[j]>43200)
{
break;
}
}
for (i=2,j=3;;i+=2,j+=2)
{
dmh[i]=dmh[i-2]+mh;
dmh[j]=dmh[j-2]+mh;
if (dmh[i]>43200&&dmh[j]>43200)
{
break;
}
}

smf[0]=0;
mhf[0]=0;
shf[0]=0;
smf[1]=1;
mhf[1]=1;
shf[1]=1;

while (y<=43200&&x<=43200)
{
x=max(dsm[smf[0]],dsh[shf[0]],dmh[mhf[0]]);
y=min(dsm[smf[1]],dsh[shf[1]],dmh[mhf[1]]);
if(x<y)
{
sum=sum+(y-x);
}
if (y==dsm[smf[1]])
{
smf[0]+=2;
smf[1]+=2;
}
if(y==dsh[shf[1]])
{
shf[0]+=2;
shf[1]+=2;
}
if(y==dmh[mhf[1]])
{
mhf[0]+=2;
mhf[1]+=2;
}

}
sum=sum/432;
BigDecimal sum1=new BigDecimal((sum));
sum1=sum1.setScale(3,BigDecimal.ROUND_HALF_UP);
System.out.println(sum1);

}
}
}