abc055_b.py

""" abc055_b """

import sys
from functools import reduce

H = pow(10, 9) + 7

def _main():
    _n = int(sys.stdin.readline())

    # N! = aH + b
    # (N+1)! = a'H + b'
    #
    # (N+1) * N! = aH(N+1) + b(N+1)
    #            = aH(N+1) + int(b(N+1)/H) * H + b(N+1) % H
    # a' = a(N+1) + int(b(N+1)/H)
    # b' = b(N+1) % H
    #
    _b = reduce(lambda b, n: (b * n) % H, range(1, _n + 1), 1)

    print(_b)

if __name__ == '__main__':
    _main()