#!/usr/bin/env python

#
# a simple program computing distances
#
# written by e.bonakdarian  dec 2010
#

from math import sqrt

def distance(x, y, other_x, other_y):
    # compute the distance between this point
    # and the other point on the plane

    x_diff = other_x - x
    y_diff = other_y - y
    
    dist = sqrt((x_diff**2) + (y_diff**2))
    return dist



def main():
    tom_start_x = 200
    tom_start_y = 300
    tom_end_x  =  500
    tom_end_y  =  700

    mary_start_x  = 234
    mary_start_y  = -300
    mary_end_x = 200
    mary_end_y =  0

    tom_distance = distance(tom_start_x, tom_start_y, tom_end_x, tom_end_y)
    mary_distance = distance(mary_start_x, mary_start_y, mary_end_x, mary_end_y)


    print 'Tom traveled %.2f units.' % tom_distance
    print 'Mary traveled %.2f units.' % mary_distance


    if tom_distance > mary_distance:
        print 'Tom traveled further.'
    elif mary_distance > tom_distance:
        print 'Mary traveled further.'
    else:
        print 'Both traveled the same distance.'


if __name__ == '__main__':
    main()