1 #include <iostream>
 2 #include <stdio.h>
 3 #include <string.h>
 4 #include <math.h>
 5 #include <algorithm>
 6 #define eps1 0.000000001
 7 using namespace std;
 8 int main()
 9 {
10     double ua,u0,u1,t1,c,k,y;
11     int n,i,t,x,cas=1;
12     scanf("%d",&t);
13     while(t--)
14     {
15         printf("Case %d:\n",cas++);
16         cin>>ua>>u0>>u1>>t1>>n;
17         c=log(u0-ua);
18         k=(log(u1-ua)-c)/t1;
19         for(i=0;i<n;i++)
20         {
21             cin>>x>>y;
22             if(x)
23             {
24                 if(ua==u0)
25                  printf("%.2lf\n",ua);
26                 else
27                 printf("%.2lf\n",ua+exp(k*y+c));
28             }
29             else
30             {
31                 if(ua==u0)
32                  printf("%.2lf\n",0.0);
33                 else
34                 printf("%.2lf\n",(log(y-ua)-c)/k);
35             }
36         }
37         cout<<endl;
38     }
39 }