#   windchill.py
#   tpm
#   A program that prints a nicely formatted table of windchill values.  
 
 
from math import *
 
def windchill(t, v):
    c = 35.74 + (0.6215 * t) - (35.75 * v ** .16) + (.4275 * t * v ** .16)
    return c
 
def main():
    print "MPH:",
    for k in range (-20, 70, 10):
        print "%3d" %k,
    print
    print "_" * 44
    for velocity in range (5, 55, 5):
        print "%3d" %velocity,
        for temp in range (-20, 70, 10):
            chill = windchill(temp, velocity)
            print "%3d" %round(chill),
        print
 
    main()