"""Sample code to read in test cases:
import sys
test_cases = open(sys.argv[1], 'r')
for test in test_cases:
    # ignore test if it is an empty line
    # 'test' represents the test case, do something with it
    # ...
    # ...
test_cases.close()
"""

import math
x_1 = 25
x_2 = 1
y_1 = 4
y_2 = -6
print ("x_1 =", x_1, "y_1 =", y_1 )
print ("x_2 =", x_2, "y_2 =", y_2)
distance = math.sqrt((x_2 - x_1) ** 2 + (y_2 - y_1) ** 2)
print (distance)

def evaltest(s):
    points = eval(s.replace(') ', '), '))
    return int(dist(*points))
 
def dist(pt1, pt2):
    x1, y1 = pt1
    x2, y2 = pt2
    return ((x1 - x2) ** 2 + (y1 - y2) ** 2) ** 0.5
 
import sys
test_cases = open(sys.argv[1], 'r')
for test in test_cases:
    print(evaltest(test))
test_cases.close()

from math import hypot