Help. My program always got Wrong Answer!
Posted by
crazy 23 Apr 2002 05:47
Maybe the input is wrong but i don't know how to do this
help
thanks !
#include<iostream.h>
#include<math.h>
#include<stdio.h>
const double pi=3.1415926;
const double R=3437.5;
double x_ship,y_ship,z_ship;
double x_ice,y_ice,z_ice;
double dist(double x1,double y1,double z1,double x2,double y2,double
z2)
{
double ans;
ans=sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)+(z1-z2)*(z1-z2));
return ans;
}
void main()
{
double X1,X2,X3,Y1,Y2,Y3;
double A1,A2,A3,B1,B2,B3;
double ans,sita,d,r1,r2;
int location_ship1,location_ship2,location_ice1,location_ice2;
char ch[200];
char c;
//north=1;south=-1;east=1;west=-1;
//input
gets(ch);
gets(ch);
gets(ch);
cin>>X1>>c>>X2>>c>>X3>>c>>ch;
if(ch[0]=='N') location_ship1=1; else location_ship1=-1;
cin>>ch>>Y1>>c>>Y2>>c>>Y3>>c>>ch;
if(ch[0]=='E') location_ship2=1; else location_ship2=-1;
gets(ch);
cin>>A1>>c>>A2>>c>>A3>>c>>ch;
if(ch[0]=='N') location_ice1=1; else location_ice1=-1;
cin>>ch>>B1>>c>>B2>>c>>B3>>c>>ch;
if(ch[0]=='E') location_ice2=1; else location_ice2=-1;
gets(ch);
z_ship=R*sin((X1+(X2+X3/60)/60)*pi/180);
z_ship*=location_ship1;
r1=R*cos((X1+(X2+X3/60)/60)*pi/180);
z_ice=R*sin((A1+(A2+A3/60)/60)*pi/180);
z_ice*=location_ice1;
r2=R*cos((A1+(A2+A3/60)/60)*pi/180);
y_ship=r1*cos((Y1+(Y2+Y3/60)/60)*pi/180);
y_ice=r2*cos((B1+(B2+B3/60)/60)*pi/180);
x_ship=r1*sin((Y1+(Y2+Y3/60)/60)*pi/180);
x_ship*=location_ship2;
x_ice=r2*sin((B1+(B2+B3/60)/60)*pi/180);
x_ice*=location_ice2;
d=dist(x_ship,y_ship,z_ship,x_ice,y_ice,z_ice);
sita=acos((R*R*2-d*d)/(2*R*R));
ans=R*sita;
printf("The distance to the iceberg: %.2lf miles. \n",ans);
if(ans<100) printf("DANGER!\n");
}
Re: Help. My program always got Wrong Answer!
Your program prints DANGER if the answer is
99.999999;
you should print DANGER only if the number you have printed is
99.99 or less
Good luck.
Re: Help. My program always got Wrong Answer!
Posted by
crazy 27 Apr 2002 19:21
thank you
but i could not correct my program
and i still got the wrong answer
whether you can tell me more
also i doubt whether my input code is ok?
i am so lazy and i do in this way
Re: Help. My program always got Wrong Answer!
Well, you could see how many symbols you have printed (i think printf
returns this), so if this number is ... (one more than usually), you
print 'DANGER!'
Good luck.