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求助。。。郁闷了。。弄了半天也不知道哪里错了。。

Posted by 123369ab at 2011-09-23 10:08:10 on Problem 3581
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <algorithm>
using namespace std;
#define M 2000020
struct node
{
	int id;
	int dig;
}d[M];
int cmp1(node a,node b)
{
	if(a.dig!=b.dig)
		return a.dig<b.dig;
	return a.id<b.id;
}
int wa[M],wb[M],wv[M],ws[M];
int cmp(int *r,int a,int b,int l)
{
	return r[a]==r[b]&&r[a+l]==r[b+l];
}
void da(int *r,int *sa,int n,int m)
{
	int i,j,p,*x=wa,*y=wb,*t;
	for(i=0;i<m;i++) ws[i]=0;
	for(i=0;i<n;i++) ws[x[i]=r[i]]++;
	for(i=1;i<m;i++) ws[i]+=ws[i-1];
	for(i=n-1;i>=0;i--) sa[--ws[x[i]]]=i;
	for(j=1,p=1;p<n;j*=2,m=p)
	{
		for(p=0,i=n-j;i<n;i++) y[p++]=i;
		for(i=0;i<n;i++) if(sa[i]>=j) y[p++]=sa[i]-j;
		for(i=0;i<n;i++) wv[i]=x[y[i]];
		for(i=0;i<m;i++) ws[i]=0;
		for(i=0;i<n;i++) ws[wv[i]]++;
		for(i=1;i<m;i++) ws[i]+=ws[i-1];
		for(i=n-1;i>=0;i--) sa[--ws[wv[i]]]=y[i];
		for(t=x,x=y,y=t,p=1,x[sa[0]]=0,i=1;i<n;i++)
			x[sa[i]]=cmp(y,sa[i],sa[i-1],j)?p-1:p++;
	}
}
int r[M],sa[M];
int main()
{
	int n,i,j;
	scanf("%d",&n);
	for(i=n-1;i>=0;i--)
	{
		scanf("%d",&d[i].dig);
		d[i].id=i;
	}
//	for(i=0;i<n;i++)
//		printf("%d %d\n",d[i].dig,d[i].id);
//	printf("\n");
	sort(d,d+n,cmp1);
//	for(i=0;i<n;i++)
//		printf("%d ",d[i].dig);
//	printf("\n");
	int num=1;
	for(i=0;i<n;i++)
	{
		if(i&&d[i].dig==d[i-1].dig)
		{
			r[d[i].id]=r[d[i-1].id];
			continue;
		}
		r[d[i].id]=i+1;
	}
	r[n]=0;
//	for(i=0;i<n;i++)
//		printf("%d ",r[i]);
//	printf("\n");
	da(r,sa,n+1,n+10);
	for(i=1;i<=n&&sa[i]<=1;i++);
	int tmp=sa[i];
	for(j=tmp;j<n;j++)
		printf("%d\n",d[r[j]-1].dig);
	r[tmp]=0;
	da(r,sa,tmp+1,n+10);
	for(i=1;i<tmp&&!sa[i];i++);
	int k=sa[i];
	for(j=k;j<tmp;j++)
		printf("%d\n",d[r[j]-1].dig);
	for(i=0;i<k;i++)
		printf("%d\n",d[r[i]-1].dig);
	return 0;
}

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