#!/usr/bin/env python3

import sys


def f_overlap(pair):
    e1, e2 = pair
    l1, h1 = e1
    l2, h2 = e2
    if l1 <= l2 and h1 >= h2: return True
    if l2 <= l1 and h2 >= h1: return True
    return False

def overlap(pair):
    e1, e2 = pair
    l1, h1 = e1
    l2, h2 = e2
    if l1 <= h2 and h1 >= l2: return True
    if l2 <= h1 and h2 >= l1: return True
    return False


if __name__ == '__main__':
    lines = [line.strip('\n') for line in open(sys.argv[1])]
    pairs = [tuple([tuple([int(n) for n in e.split('-')]) for e in l.split(',')]) for l in lines]

    # challenge 1
    fopairs = list(map(f_overlap,pairs))
    res1 = str(sum(fopairs))
    print("challenge 1:" + "\n" +  res1 + "\n")

    # challenge 2
    opairs = list(map(overlap,pairs))
    res2 = str(sum(opairs))
    print("challenge 2:" + "\n" +  res2 + "\n")