POJ 2501

 #include<iostream>
 #include<iomanip>
 #include<stdio.h>
 #include<string>
 #include<math.h>
 using namespace std;

 int main()
 {
     //freopen("acm.acm","r",stdin);
     string s;
     int i;
     double speed = 0.0;
     double road;
     double time;
     double time1;
     double past;
     time = ;
     past = ;
     road = ;
     getline(cin,s);
     time = (double(s[]-'')*10.0+double(s[]-''))+(double(s[]-'')*10.0+double(s[]-''))/60.0+(double(s[]-'')*10.0+double(s[]-''))/3600.0;
     if(s.length() > )
     {
         for(i =  ; i < s.length(); ++ i)
         {
             speed = speed*10.0 + double(s[i]-'');
         }
     }
     else
     {
         cout<<s<<" "<<"0.00 km"<<endl;
     }
     time *= ;
     while(getline(cin,s))
     {
         if(s.length() > )
         {
             time1 = (double(s[]-'')*10.0+double(s[]-''))+(double(s[]-'')*10.0+double(s[]-''))/60.0+(double(s[]-'')*10.0+double(s[]-''))/3600.0;
             time1 *= 60.0;
             past += speed*(time1-time);
             time = time1;
             speed = ;
             for(i =  ; i < s.length(); ++ i)
             {
                 speed = speed*10.0 + double(s[i]-'');
             }
         }
         if(s.length() == )
         {
             time1 = (double(s[]-'')*10.0+double(s[]-''))+(double(s[]-'')*10.0+double(s[]-''))/60.0+(double(s[]-'')*10.0+double(s[]-''))/3600.0;
             time1 *= 60.0;
             cout<<s<<' ';
             cout<<setiosflags(ios::fixed)<<setprecision()<<(speed*(time1-time)+past)/60.0<<' '<<"km"<<endl;
         }
     }

 }