#!/usr/bin/env python3

# Challenge 067
#
# TASK #1 > Number Combinations
# Submitted by: Mohammad S Anwar
#
# You are given two integers $m and $n. Write a script print all possible
# combinations of $n numbers from the list 1 2 3 ... $m.
#
# Every combination should be sorted i.e. [2,3] is valid combination but [3,2] is not.
#
# Example:
#   Input: $m = 5, $n = 2
#
#   Output: [ [1,2], [1,3], [1,4], [1,5], [2,3], [2,4], [2,5], [3,4], [3,5], [4,5] ]

import sys
from itertools import combinations

m, n = map(int, sys.argv[1:3])
m_list = list(range(1, m + 1))
out = set()

for combo in combinations(m_list, n):
    out.add(str(sorted(combo)))

print("[", ", ".join(sorted(out)), "]")