import sys
input = sys.stdin.readline

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

NOW=list(range(1,N+1))

ANS=[]

for i in range(N):
    #print(P,NOW)
    if P[i]==NOW[i]:
        continue
    else:
        k=NOW.index(P[i])

        for j in range(k,0,-1):
            ANS.append(j)
            NOW[j],NOW[j-1]=NOW[j-1],NOW[j]

    #print(NOW,ANS)

if len(ANS)<=N*N:
    print("Yes")
    print(len(ANS))
    print("\n".join(map(str,ANS)))
    print()

else:
    print("No")