@[_PyPy_](/user/316258) python没有++，只有+=1
by Sophon @ 2020-02-05 12:49:34
by Star_Wind @ 2020-02-05 12:50:32
@[Sophon](/user/159730) 谢谢
by xC41 @ 2020-02-05 12:51:25
然而变成了运行错误
```python
a=[[0]*1005 for i in range(1005)]
count=0
l=int(input(""))
m=int(input(""))
for i in range(0,l):
a[i]=0
for i in range(0,m):
x=int(input(""))
y=int(input(""))
for j in range(x,y):
if a[j]==0:
a[j]+=1
else:
continue
for i in range(0,l):
if a[i]==0:
count+=1
print(count)
```
by xC41 @ 2020-02-05 12:52:22
@[_PyPy_](/user/316258) 666
by Star_Wind @ 2020-02-05 12:53:20
@[炫光之影](/user/233251) Orz Tjl.
by xC41 @ 2020-02-05 12:53:38
@[_PyPy_](/user/316258) ~~关注了Aiz就是惹~~
by Star_Wind @ 2020-02-05 12:54:05
@[炫光之影](/user/233251) ~~草~~
by xC41 @ 2020-02-05 12:55:04
@[_PyPy_](/user/316258) ~~小号警告~~
by Star_Wind @ 2020-02-05 12:55:27
@[炫光之影](/user/233251) 所以说到底哪里错了
by xC41 @ 2020-02-05 12:56:46