kangaroo.py

#!/bin/python3

import math
import os
import random
import re
import sys

#
# Complete the 'kangaroo' function below.
#
# The function is expected to return a STRING.
# The function accepts following parameters:
#  1. INTEGER x1
#  2. INTEGER v1
#  3. INTEGER x2
#  4. INTEGER v2
#

def kangaroo(x1, v1, x2, v2):
    if x1 > x2:
        x1, x2 = x2, x1
        v1, v2 = v2, v1
    dv = v1 - v2
    if dv <= 0:
        res = (x1 == x2)
    else:
        dx = x2 - x1
        res = (dx % dv == 0)
    return "YES" if res else "NO"

if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    first_multiple_input = input().rstrip().split()

    x1 = int(first_multiple_input[0])

    v1 = int(first_multiple_input[1])

    x2 = int(first_multiple_input[2])

    v2 = int(first_multiple_input[3])

    result = kangaroo(x1, v1, x2, v2)

    fptr.write(result + '\n')

    fptr.close()