#!/usr/bin/env python

import sys
import math

try:
    infilename = sys.argv[1]
    outfilename = sys.argv[2]
except:
    print "Usage:",sys.argv[0], "infile outfile"
    sys.exit(1)
    
# Open file for reading
ifile = open( infilename, 'r')

# Open file for writing
ofile = open(outfilename, 'w') 

# Define a function
def myfunc(y):
    if y >= 0.0:
        return y**5*math.exp(-y)
    else:
        return 0.0

# read ifile line by line and write out transformed values:
for line in ifile:
    pair = line.split()
    x = float(pair[0])
    y = float(pair[1])
    # transform y value
    fy = myfunc(y) 
    ofile.write('%g  %12.5e\n' % (x,fy))

# Close the files
ifile.close()
ofile.close()