HDU 5701 中位数计数 暴力

老题了，附上黄学长链接一发，直接改改就AC了，http://hzwer.com/1216.html

#include <cstdio>
#include <iostream>
#include <cstring>
using namespace std;
const int N=1e4+;
int num[N],sum[N],l[N*],r[N*],a[N];
int n;
int get(int x){
    int p,ans=;
    memset(sum,,sizeof(sum));
    memset(l,,sizeof(l));
    memset(r,,sizeof(r));
    for(int i=;i<=n;i++)
    {
        if(a[i]>x)num[i]=;
        else if(a[i]==x){num[i]=;p=i;}
        else num[i]=-;
    }
    l[n]=;r[n]=;
    for(int i=p-;i>=;i--)
       {sum[i]=sum[i+]+num[i];l[sum[i]+n]++;}
    for(int i=p+;i<=n;i++)
       {sum[i]=sum[i-]+num[i];r[sum[i]+n]++;}
    for(int i=;i<=*n-;i++)ans+=l[i]*r[*n-i];
    return ans;
}
int main()
{
    while(~scanf("%d",&n)){
      for(int i=;i<=n;++i)
       scanf("%d",&a[i]);
      for(int i=;i<n;++i){
        printf("%d ",get(a[i]));
      }
      printf("%d\n",get(a[n]));
    }
    return ;
}