OJ-Problems-Source/HDOJ/4455_autoAC.cpp

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#include <cstdio>
#include <cmath>
#include <cstring>
#include <algorithm>
#include <iostream>
using namespace std;
typedef __int64 LL;
const int maxn=1e6+10;
int c[maxn],a[maxn],pre[maxn],sum[maxn],num[maxn];
LL dp[maxn];
int main()
{
int n,m;
while(scanf("%d",&n)!=EOF)
{
if(n==0)break;
int i,j,k,t;
for(i=1;i<=n;i++)
scanf("%d",&a[i]);
memset(c,0,sizeof(c));
memset(pre,0,sizeof(pre));
for(i=1;i<=n;i++)
{
c[i-pre[a[i]]]++;
pre[a[i]]=i;
}
sum[n]=c[n];
for(i=n-1;i>=1;i--)
sum[i]=sum[i+1]+c[i];
memset(c,0,sizeof(c));
num[1]=1;
c[a[n]]++;
for(i=2;i<=n;i++)
{
if(c[a[n-i+1]]==0)
{
num[i]=num[i-1]+1;
c[a[n-i+1]]=1;
}
else
num[i]=num[i-1];
}
dp[1]=n;
for(i=2;i<=n;i++)
{
dp[i]=dp[i-1]-num[i-1]+sum[i];
}
scanf("%d",&m);
for(i=0;i<m;i++)
{
scanf("%d",&t);
printf("%I64d\n",dp[t]);
}
}
return 0;
}