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