Red Huang

double spherical\_distance(double lat1,double lon1,double lat2,double lon2) {  
  
double dlon = lon2 - lon1;  
double dlat = lat2 - lat1;  
double a = pow((sin(dlat/2)),2) + cos(lat1) \* cos(lat2) \* pow(sin(dlon/2), 2);  
double c = 2 \* atan2(sqrt(a), sqrt(1-a));  
double d = r \* c;  
  
return d;  
}

//====================================================================||  
//                                                                    ||  
//                                                                    ||  
//                         Author : GCA                               ||  
//                  6AE7EE02212D47DAD26C32C0FE829006                  ||  
//====================================================================||  
#include <iostream>  
#include <cstdio>  
#include <cstring>  
#include <algorithm>  
#include <string\>  
#include <cmath>  
#include <climits>  
#include <vector>  
#include <set>  
#include <map>  
#include <queue>  
#include <cctype>  
#include <utility>  
using namespace std;  
#ifdef ONLINE\_JUDGE  
#define ll "%lld"  
#else  
#define ll "%I64d"  
#endif  
typedef unsigned int uint;  
typedef long long int Int;  
#define Set(a,s) memset(a,s,sizeof(a))  
#define Write(w) freopen(w,"w",stdout)  
#define Read(r) freopen(r,"r",stdin)  
#define Pln() printf("\\n")  
#define I\_de(x,n)for(int i=0;i<n;i++)printf("%d ",x\[i\]);Pln()  
#define De(x)printf(#x"%d\\n",x)  
#define For(i,x)for(int i=0;i<x;i++)  
#define CON(x,y) x##y  
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\\  
    printf("%d ",dp\[htx\]\[hty\]);}Pln();}  
#define M 55  
#define PII pair<int,int\>  
#define PB push\_back  
#define oo INT\_MAX  
#define Set\_oo 0x3f  
#define Is\_debug true  
#define debug(...) if(Is\_debug)printf("DEBUG: "),printf(\_\_VA\_ARGS\_\_)  
#define FOR(it,c) for(\_\_typeof((c).begin()) it=(c).begin();it!=(c).end();it++)  
#define eps 1e-6  
bool xdy(double x,double y){return x>y+eps;}  
bool xddy(double x,double y){return x>y-eps;}  
bool xcy(double x,double y){return x<y-eps;}  
bool xcdy(double x,double y){return x<y+eps;}  
int min3(int x,int y,int z){  
    int tmp=min(x,y);  
    return min(tmp,z);  
}  
int max3(int x,int y,int z){  
    int tmp=max(x,y);  
    return max(tmp,z);  
}  
double r=6378;  
double pi=3.141592653589793;  
map<string,pair<double,double\> > sid;  
double cal(string a,string b){  
    double alat=sid\[a\].first;  
    double alon=sid\[a\].second;  
    double blat=sid\[b\].first;  
    double blon=sid\[b\].second;  
    double dlon=blon-alon;  
    double dlat=blat-alat;  
    double ans=pow(sin(dlat/2),2)+cos(alat)\*cos(blat)\*pow(sin(dlon/2),2);  
    double cc=2\*atan2(sqrt(ans),sqrt(1-ans));  
    return r\*cc;  
    //return r\*acos(sin(alat)\*sin(blat)+cos(alat)\*cos(blat)\*cos(blon-alon));  
}  
int main() {  
    ios\_base::sync\_with\_stdio(0);  
  
        char str\[1000\],str2\[1000\];  
        double x,y;  
        for(;scanf("%s",str);){  
            if(!strcmp(str,"#"))break;  
            scanf("%lf%lf",&x,&y);  
//            if(x<0)x+=90;  
//            if(y<0)y+=180;  
            sid\[str\].first=x\*pi/180;  
            sid\[str\].second=y\*pi/180;  
        }  
        for(;scanf("%s %s",str,str2)==2;){  
            if(!strcmp(str,"#"))break;  
            if(!sid.count(str)||!sid.count(str2)){  
                printf("%s - %s\\nUnknown\\n",str,str2);  
            }else  
                printf("%s - %s\\n%.0f km\\n",str,str2,cal(str,str2));  
        }  
}