MOD = 10**9 + 7 class FenwickTree: def __init__(self, size): self.n = size self.tree = [0] * (self.n + 1) def update(self, idx, delta): while idx <= self.n: self.tree[idx] += delta idx += idx & -idx def query(self, idx): res = 0 while idx > 0: res += self.tree[idx] idx -= idx & -idx return res def main(): import sys input = sys.stdin.read().split() n = int(input[0]) p = list(map(int, input[1:n+1])) fact = [1] * (n + 1) for i in range(1, n + 1): fact[i] = fact[i-1] * i % MOD ft = FenwickTree(n) for i in range(1, n + 1): ft.update(i, 1) res = 0 for i in range(n): x = p[i] cnt = ft.query(x - 1) res = (res + cnt * fact[n - i - 1]) % MOD ft.update(x, -1) print((res + 1) % MOD) if __name__ == "__main__": main()