View Code of Problem 1068

#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdio>
int main()
{
    int n;
    double p,l,v,d;
    int cas=1;
    while(scanf("%d%lf",&n,&d)!=EOF&&n+d){
        while(n--){
            scanf("%lf%lf%lf",&p,&l,&v);
            d=d-l+l*2/v;
        }
        printf("Case %d: %.3lf\n\n",cas++,d);
    }
    return 0;
}