1 /*
 2 1.0 1.0 1.0 9
 3 0.01
 4 0.031623
 5 0.1
 6 0.31623
 7 1.0
 8 3.1623
 9 10.0
10 31.623
11 100.0
12  */
13 
14 #include <stdio.h>
15 #include <math.h>
16 
17 #define MAX_NUM 50
18 
19 int n;
20 double Vs, R, C;
21 double w[MAX_NUM], Vr[MAX_NUM];
22 
23 void GetData()
24 {
25     int i = 0;
26     scanf("%lf %lf %lf %d", &Vs, &R, &C, &n);
27     for(i=0; i<n; i++)
28     {
29         scanf("%lf", &w[i]);
30     }
31 }
32 
33 void Calc()
34 {
35     int i = 0;
36     for(i=0; i<n; i++)
37     {
38         Vr[i]=C*R*w[i]*Vs / sqrt(1 + pow(C*R*w[i], 2));
39     }
40 }
41 
42 void PrintResult()
43 {
44     int i = 0;
45     for(i=0; i<n; i++)
46     {
47         printf("%.3f\n", Vr[i]);
48     }
49 }
50 
51 int main()
52 {
53     GetData();
54     Calc();
55     PrintResult();
56     return 0;
57 }