<reponame>taseikyo/til
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Date    : 2019-07-11 15:34:12
# @Author  : <NAME> (<EMAIL>)
# @Link    : github.com/taseikyo
# @Version : Python3.7

# https://projecteuler.net/problem=15

from pylib import Combination


def main():
    return Combination(40, 20)


if __name__ == "__main__":
    # 137846528820
    print(main())
