import sequtils,strutils,strscans proc powInt(n : int64, m : int64, k = 1_000_000_007):int64 = if m == 0: return 1 elif m == 1: return (n mod k) if (m mod 2) == 0: return powInt((n * n) mod k,m div 2, k) mod k else: return (powInt((n * n) mod k,m div 2, k) * n) mod k const Max_num = 100_003 m : int64 = 1_000_000_007 var kaizyou : array[Max_num + 1, int64] gyakuKaizyou : array[Max_num + 1, int64] kaizyou[0] = 1 for i in 1..Max_num: kaizyou[i] = ((kaizyou[i - 1] * i.int64) mod m) gyakuKaizyou[Max_num] = powInt(kaizyou[Max_num], 1_000_000_005, 1_000_000_007) for i in countdown(Max_num - 1,0): gyakuKaizyou[i] = (gyakuKaizyou[i + 1] * (i + 1)) mod m proc combination(n : int64, k : int64): int64 = if n < k: return 0 if n == k: return 1 return (((kaizyou[n] * gyakuKaizyou[n - k]) mod m) * gyakuKaizyou[k]) mod m var N = stdin.readline.parseInt ans : int64 for p in 1..N: ans = (ans + combination(N, p) * powInt(p, N - p)) mod m echo ans