@[LxAnC](/user/1242156) wa在这https://www.luogu.com.cn/record/148476804
by LxAnC @ 2024-02-26 22:59:37
在第9行和第10行之间加一行
```cpp
i=1
```
by Manchester_Is_Blue @ 2024-02-26 23:11:41
这样写(c++)
```
#include <bits/stdc++.h>
using namespace std;
int main()
{
int l,m,x,y,ans = 0;
cin >> l >> m;
int arr[10010];
for (int i = 0; i <= l; i++)
{
arr[i] = 1;
}
for (int i = 0; i < m; i++)
{
cin >> x >> y;
for (int j = x; j <= y; j++)
{
arr[j] = 0;
}
}
for (int i = 0; i <= l; i++)
{
if (arr[i] == 1)
{
ans++;
}
}
cout << ans;
return 0;
}
```
by abc_abc_abc @ 2024-02-28 18:20:47
@[Manchester_Is_Blue](/user/556851) 牛啊
我太垃圾
cpu都干废了
![cpu干费了]("C:\Users\Dell\Desktop\烧电脑.png")
by abc_abc_abc @ 2024-02-28 18:22:45
@[Manchester_Is_Blue](/user/556851) 谢谢哥,不过加上了还是无法解决
by LxAnC @ 2024-02-28 21:53:54
@[LxAnC](/user/1242156)
再把第7,8行改为
```
int* p = new int[l+1];
for (int i = 0; i <= l; i++)
```
by Manchester_Is_Blue @ 2024-02-29 16:26:58
@[LxAnC](/user/1242156) 因为 l 这个端点也有树，但你没算进去。
by Manchester_Is_Blue @ 2024-02-29 16:27:52
@[Manchester_Is_Blue](/user/556851) 牛啊,我靠解决了谢谢大佬
by LxAnC @ 2024-03-03 21:07:35