#!/usr/bin/env python
# Exercise 11
# uniq command

import sys
import argparse
from pathlib import Path

parser = argparse.ArgumentParser()
parser.add_argument("stream", default=sys.stdin, nargs="*")
parser.add_argument("-i", "--ignore-case", action="store_true")
parser.add_argument("-c", "--count", action="store_true")
args = parser.parse_args()
lines = []
counter = None

for stream in args.stream:
    if isinstance(args.stream, list):
        for line in Path(stream).open().readlines():
            lines.append(line.rstrip())
    else:
        lines.append(stream.strip())

if args.ignore_case:
    lines = list(map(lambda l: l.lower(), lines))

if args.count:
    counter = {}
    for line in lines:
        counter.setdefault(line, 0)
        counter[line] += 1

lines = sorted(set(lines))

for line in lines:
    msg = line if counter is None else f"{counter[line]} {line}"
    print(msg)