#!/usr/bin/env python3

from sys import stdin
data = [(range(int(a1), int(a2)+1), range(int(b1), int(b2)+1))
        for (a1, a2), (b1, b2) in [(a.split("-"), b.split("-"))
            for a, b in [x.split(",") for x in stdin.readlines()]]]
print(sum(all(x in b for x in a) or all(x in a for x in b) for a, b in data))
print(sum(bool(set(a) & set(b)) for a, b in data))

for a, b in data:
    if set(a) & set(b):
        print((a,b))