#include <iostream>
  #include <math.h>
  using namespace std;
  const long double D=6875;
  const long double pi=3.1415926535897932384626433;
  struct postype{
      long double x,y,z;
      };
  int x1,x2,x3,yy1,y2,y3;
 int sx1,sx2,sx3,syy1,sy2,sy3;
 char str[100000];
 char xstr[10],ystr[10],sxstr[10],systr[10];
 postype ship,ice;
 long double angle1,angle2;

 long double dis(double a,double b,double c,double d,double e,double f){
     a-=d;
     b-=e;
     c-=f;
     return sqrt(a*a+b*b+c*c);
     }

 int main(){
     for (int i=1;i<=3;++i) gets(str);
     scanf("%d^%d'%d\" %s\n",&x1,&x2,&x3,&xstr);
     scanf("and %d^%d'%d\" %s\n",&yy1,&y2,&y3,&ystr);
     gets(str);
     scanf("%d^%d'%d\" %s\n",&sx1,&sx2,&sx3,&sxstr);
     scanf("and %d^%d'%d\" %s\n",&syy1,&sy2,&sy3,&systr);
     gets(str);

     double a=x1,b=x2,c=x3;
     angle1=a*3600+b*60.0+c;
     angle1/=3600.0*180;
     angle1*=pi;
     if (xstr[0]=='S') angle1=-angle1;
     a=yy1;b=y2;c=y3;
     angle2=a*3600+b*60.0+c;
     angle2/=3600.0*180;
     angle2*=pi;
     if (ystr[0]=='W') angle2=-angle2;
     ship.x=D/2*cos(angle1)*cos(angle2);
     ship.y=D/2*cos(angle1)*sin(angle2);
     ship.z=D/2*sin(angle1);

     a=sx1,b=sx2,c=sx3;
     angle1=a*3600+b*60+c;
     angle1/=3600.0*180;
     angle1*=pi;
     if (sxstr[0]=='S') angle1=-angle1;
     a=syy1;b=sy2;c=sy3;
     angle2=a*3600+b*60+c;
     angle2/=3600.0*180;
     angle2*=pi;
     if (systr[0]=='W') angle2=-angle2;
     ice.x=D/2*cos(angle1)*cos(angle2);
     ice.y=D/2*cos(angle1)*sin(angle2);
     ice.z=D/2*sin(angle1);

     long double linedis=dis(ship.x,ship.y,ship.z,ice.x,ice.y,ice.z);
     linedis/=2;
     long double AA=asin(linedis*2/D)*2;
     long double ans=AA;
     ans=ans*D/2;

     printf("The distance to the iceberg: ");
     cout.precision(2);
     cout<<fixed;
     cout<<ans;
     printf(" miles.\n");
     if (100.00-ans>0.005) printf("DANGER!");
     }