求一组hack数据

n=int(input())
ans=0
counter=0
cur=-1
list_x=list(map(int,input().split()))
print(list_x)
for i in range(n):
    if(cur==-1):
        cur=list_x[i]
        counter+=1
        continue
    if(cur==list_x[i]-1):
        counter+=1
        cur+=1
    else:
        counter=1
        cur=list_x[i]
        ans=max(counter,ans)
print(ans)

n=int(input())
ans=0
counter=0
cur=-1
list_x=list(map(int,input().split()))
print(list_x)
for i in range(n):
    if(cur==-1):
        cur=list_x[i]
        counter+=1
        continue
    if(cur==list_x[i]-1):
        counter+=1
        cur+=1
    else:
        counter=1
        cur=list_x[i]
    ans=max(counter,ans)#这里把ans的更新放在else外
print(ans)