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  1. import sys
  2. import math
  3.  
  4. input = sys.stdin.readline
  5.  
  6. T = int(input())
  7.  
  8. for _ in range(T):
  9.     a, b = map(int, input().split())
  10.  
  11.     if a==1:
  12.         x,y,z = map(float, input().split())
  13.  
  14.         if b==2:
  15.             # cartesian -> cylinder
  16.             r = math.sqrt(x*x+y*y)
  17.  
  18.             if r < 1e-6:
  19.             	t = 0
  20.             else:
  21.             	t = math.acos(x/r)
  22.  
  23.             print(r,t,z)
  24.  
  25.         if b==3:
  26.             # cartesian -> spherical
  27.             r = math.sqrt(x*x+y*y+z*z)
  28.  
  29.             if r < 1e-6:
  30.             	u = 0
  31.             	t = 0
  32.             else:
  33. 	            u = math.asin(abs(z)/r)
  34. 	            t = math.acos(x/r)
  35.             print(r,u,t)
  36.  
  37.     if a==2:
  38.         r,t,z = map(float, input().split())
  39.  
  40.         if b==1:
  41.             # cylinder -> cartesian
  42.             x = r*math.cos(t)
  43.             y = r*math.sin(t)
  44.             print(x,y,z)
  45.  
  46.         if b==3:
  47.             # cylinder -> spherical
  48.             r_ = math.sqrt(r*r+z*z)
  49.             if r_ < 1e-6:
  50.             	u = 0
  51.             else:
  52.             	u = math.acos(abs(z)/r_)
  53.             print(r_, u, t)
  54.  
  55.     if a==3:
  56.         r,u,t = map(float, input().split())
  57.  
  58.         if r < 1e-6:
  59.         	print(0,0,0)
  60.         	continue
  61.  
  62.         if b==1:
  63.             # spherical -> cartesian
  64.             r_ = r*math.sin(u)
  65.             x = r_*math.cos(t)
  66.             y = r_*math.sin(t)
  67.             z = r*math.cos(u)
  68.             print(x, y, z)
  69.  
  70.         if b==2:
  71.             # spherical -> cylinder
  72.             r_ = r*math.sin(u)
  73.             z = r*math.cos(u)
  74.             print(r_,t,z)
  75.  
Success #stdin #stdout 0.03s 9920KB
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stdin
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6
1 2
0.00000000 0.00000000 0.00000000
1 3
0.00000000 0.00000000 0.00000000
2 1
0.00000000 0.00000000 0.00000000
2 3
0.00000000 0.00000000 0.00000000
3 1
0.00000000 0.00000000 0.00000000
3 2
0.00000000 0.00000000 0.00000000
stdout
copy 
0.0 0 0.0
0.0 0 0
0.0 0.0 0.0
0.0 0 0.0
0 0 0
0 0 0
https://ideone.com/fCDquC
language:
Python 3 (python  3.9.5)
created:
8 days ago
visibility:
public

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