The calculation is very easy. Take care about output. For output 03 or 00 or any other number less then 10, print first a 0 (zero) then print the number. To calculate the result, first I break the speed into km/h, km/m and km/s. Then I calculate the distance. The algorithm of this problem is as follows:

1. hp<-0, mp<-0,sp<-1 , kmh<-0, kmm <-0, kms <-0,distamce <-0
2. while not found EOF
3.              Take input h , m and s  //  h for hour, m for minute and s for second.
4.              distance = distance + (h - hp)*kmh + (m-mp)*kmm + (s-sp)* kms;
5.              get a character ch
6.              if ch != �\n�
7.                         get input k;
8.             kmh <- k
9.             kmm <- kmh / 60;
10.             kms <- kmm / 60;
11.             else
12.                         print the distance
13.              hp <- h;
14.              mp <- m;
15.              sp <- s;