我也是
by 高天昊 @ 2017-07-28 10:00:41
```cpp
#include<cstdio>
#include<iostream>
#include<algorithm>
using namespace std;
int n;
int a[10001];
int main()
{
freopen("box.in","r",stdin);
freopen("box.out","w",stdout);
scanf("%d",&n);
for(int i=1;i<=n;i++)
{
scanf("%d",&a[i]);
}
int ta=1,tot=0;
int max=0;
sort(a+1,a+n+1);
for(int i=n;i>0;i--)
{
if(max==0)
{
tot++;
max=a[i];
}
else {
max--;
if(a[i]<max)
{
max=a[i];
}
}
}
cout<<tot<<endl;
return 0;
fclose(stdin);
fclose(stdout);
}
```
by 世代空明 @ 2017-07-28 10:33:31
@[世代空明](/space/show?uid=47001) 提交不能有文件读写
by Aehnuwx @ 2017-07-28 10:38:14
@[Xray](/space/show?uid=46747) 这是我们夏令营用的，要用lemon
by 世代空明 @ 2017-07-28 20:16:30
@[世代空明](/space/show?uid=47001) 好吧
by Aehnuwx @ 2017-07-28 21:42:37