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Re:求助。。。郁闷了。。弄了半天也不知道哪里错了。。

Posted by zhuchuanchuan at 2012-08-12 15:34:45 on Problem 3581
In Reply To: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
> #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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