## https://yukicoder.me/problems/no/3489



def main():
    N = int(input())
    P = list(map(int, input().split()))

    Q = [-1] * N
    for i in range(N):
        Q[P[i] - 1] = i + 1
    P = Q

    # ターゲット
    answer = []
    current = [i + 1 for i in range(N)]
    for i in range(N):
        p = P[i]

        if p == current[i]:
            continue


        for j in range(i + 1, N):
            if p == current[j]:
                for k in reversed(range(i, j)):
                    answer.append(k + 1)
                    tmp = current[k]
                    current[k] = current[k + 1]
                    current[k + 1] = tmp
    
    print("Yes")
    print(len(answer))
    for a in answer:
        print(a)



            
        





if __name__ == "__main__":
    main()