import sys
target = float(sys.argv[1])
freq = 8000000.0

prescalar = [1, 8, 64, 256, 1024]

print "Prescaler  Compare   Actual   Target"
for scaler in prescalar :
    compare = (freq / (2*scaler)) / target
    icompare = round(compare)
    act = (freq / (2*scaler)) / icompare
    print "%9d %8d %8.2f %8.2f" % (scaler, icompare-1, act, target)