擅长:python、mysql、java
<p>试试这个:-</p>
<pre><code>cnt=0
sm=0
res=0
len_of_seq=0
while True:
n=input()
if cnt<2:
sm+=n
cnt+=1
elif cnt==2:
if sm==n:
if len_of_seq<=2: #not increase value of count for first two number
res+=1
else:
res+=cnt+1
sm=0
cnt=0
len_of_seq+=1
if n==-1:
break
print(res)
</code></pre>