#!/usr/bin/env python3
# -*- coding: utf-8 -*-

data = []

# parse input
input_file = open("input", "r")
for line in input_file:
    line = line.strip()
    line = line.replace(",", "-").split("-")
    tt = []
    for t in line:
        tt.append(int(t))
    data.append(tt)
input_file.close()


def a_is_b(a1, a2, b1, b2):
    if a1 >= b1 and a2 <= b2:
        print(a1, a2, b1, b2)
        return True
    return False


counter = 0
for d in data:
    if a_is_b(d[0], d[1], d[2], d[3]) or a_is_b(d[2], d[3], d[0], d[1]):
        # print(d)
        counter += 1
print("Lösung:", counter)