import sys input = lambda :sys.stdin.readline()[:-1] ni = lambda :int(input()) na = lambda :list(map(int,input().split())) sys.setrecursionlimit(10**7) yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES") no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO") ####################################################################### n = ni() a = [i-1 for i in na()] b = n-1 z = [] ans = [] for i in range(n): if a[i]==b: if len(z)==0: No() exit() for j in range(len(z)-1): ans.append(z.pop()+1) ans.append(b+1) b-=1 if i!=n-1 and len(z)!=0 and b==z[0]: No() exit() else: z.append(a[i]) Yes() print(*ans)