10281 - Average Speed

/***

            Bismillahir Rahmanir Rahim
            Read the name of Allah, who created you!!!
            Author : Shah Newaj Rabbi Shishir
            Department of CSE, City University, Bangladesh.

***/

#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf
#define ssf sscanf
#define spf sprintf
#define fsf fscanf
#define fpf fprintf
#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define scase sf ("%d",&tc)
#define sn sf ("%d",&n)
#define whilecase while (tc--)
#define eof while (cin >> n)
#define forloop for (pos=1; pos<=tc; pos++)
#define arrayloop (i=0; i<n; i++)
#define cinstr cin >> str
#define getstr getline (cin,str)
#define pcase pf ("Case %d: ",pos)
#define pii pair <int,int>
#define pb push_back
#define in insert
#define llu unsigned long long
#define lld long long
#define U unsigned int
#define endl "\n"

const int MOD = 1000000007;
const int MAX = 1000005;

int main (void)
{
    /*
    freopen ("input.txt","r",stdin);
    freopen ("output.txt","w",stdout);
    */

    char str[20];
    int n,hr,mint,sec,sp=0,nsp,x=0,y;
    double dis;

    while (gets (str))
    {
        n = ssf (str,"%d:%d:%d %d",&hr,&mint,&sec,&nsp);

        y = (hr * 3600) + (mint * 60) + sec;
        dis += ((y - x) * sp) / 3600.0;
        x = y;

        if (n == 4)
            sp = nsp;
        else
            pf ("%02d:%02d:%02d %0.2lf km\n",hr,mint,sec,dis);
    }

    return 0;
}