HDU 2896 & AC自动机

题意:

  貌似差不多?....

  对拍没什么问题,然而莫名RE...(这你也有脸贴?(这怎么能怪我...

/*==========================================================================
# Last modified: 2016-03-02 19:00
# Filename: a.cpp
# Description: 
==========================================================================*/
#define me AcrossTheSky 
#include <cstdio> 
#include <cmath> 
#include <ctime> 
#include <string> 
#include <cstring> 
#include <cstdlib> 
#include <iostream> 
#include <algorithm> 
  
#include <set> 
#include <map> 
#include <stack> 
#include <queue> 
#include <vector> 
 
#define lowbit(x) (x)&(-x) 
#define FOR(i,a,b) for((i)=(a);(i)<=(b);(i)++) 
#define FORP(i,a,b) for(int i=(a);i<=(b);i++) 
#define FORM(i,a,b) for(int i=(a);i>=(b);i--) 
#define ls(a,b) (((a)+(b)) << 1) 
#define rs(a,b) (((a)+(b)) >> 1) 
#define getlc(a) ch[(a)][0] 
#define getrc(a) ch[(a)][1] 
 
#define maxn 100200
#define maxm 100000 
#define maxc 100
#define pi 3.1415926535898 
#define _e 2.718281828459 
#define INF 1070000000 
using namespace std; 
typedef long long ll; 
typedef unsigned long long ull; 
 
template<class T> inline 
void read(T& num) { 
    bool start=false,neg=false; 
    char c; 
    num=0; 
    while((c=getchar())!=EOF) { 
        if(c=='-') start=neg=true; 
        else if(c>='0' && c<='9') { 
            start=true; 
            num=num*10+c-'0'; 
        } else if(start) break; 
    } 
    if(neg) num=-num; 
} 
/*==================split line==================*/
char temp[maxn],s[60];
int ch[maxn][maxc],f[maxn],last[maxn];
vector<int> p[5000],val[maxn];
int sz,ans;
void reset(){	
	sz=1; ans=0;
	memset(ch,0,sizeof(ch)); memset(last,0,sizeof(last));
	memset(f,0,sizeof(f));
}
int idx(char c){return c-' ';}
void insert(char *s,int v){
	int u=0,len=strlen(s);
	FORP(i,0,len-1){
		int c=idx(s[i]);
		if (!ch[u][c]) {
			while(val[sz].size()) val[sz].pop_back();
			//num[sz]=0; //val[sz]=0;
			ch[u][c]=sz++;
		}
		u=ch[u][c];
	}
	val[u].push_back(v);
}
void add(int j,int id){
	while(val[j].size()){ 
		ans+=val[j].size(); 
		FORP(i,0,val[j].size()-1) p[id].push_back(val[j][i]);
		//while (val[j].size()) {
			//val[j].pop_back();
		//ans+=num[j]; num[j]=0; val[j]=0;
		j=last[j];
	}
}
void find(char *T,int id){
	int n=strlen(T);
	int j=0;
	FORP(i,0,n-1){
		int c=idx(T[i]);
		j=ch[j][c];
		if (val[j].size()) add(j,id);
		else if(last[j]) add(last[j],id);
	}
}
void getfail(){
	queue<int>q;
	f[0]=0;
	FORP(c,0,maxc-1){
		int u=ch[0][c];
		if (u) { 
			f[u]=0; last[u]=0; 
			q.push(u);
		}
	}
	while (!q.empty()){
		int r=q.front(); q.pop();
		FORP(c,0,maxc-1){
			int u=ch[r][c];
			if (!u) {ch[r][c]=ch[f[r]][c]; continue;}
			q.push(u);
			int v=f[r];
			while (v && !ch[v][c]) v=f[v];
			f[u]=ch[v][c];
			last[u]=val[f[u]].size()?f[u]:last[f[u]];
		}
	}
}
int main(){ 
		reset();
		int n; read(n);
		FORP(i,1,n){
			scanf("%s",s);
			insert(s,i);
		}
		getfail();
		int m,tot=0; read(m);
		FORP(i,1,m) {
			p[i].clear();
			ans=0;
			scanf("%s",temp);
			find(temp,i);
			if (ans) tot++; 
		}
		FORP(i,1,m)
		if (p[i].size()){
			printf("web %d: ",i);
			sort(p[i].begin(),p[i].end());
			int j=0;
			//FOR(j,0,p[i].size()-1){
			while (j<=p[i].size()-1){
				while (j<p[i].size()-1 && p[i][j]==p[i][j+1]) j++;
				printf("%d%c",p[i][j],j==p[i].size()-1?'
':' ');
				//while (j<=p[i].size()-1 && p[i][j]==p[i][j-1]) j++;
				j++;
			}
		}
		printf("total: %d
",tot);
}
Sometimes it s the very people who no one imagines anything of. who do the things that no one can imagine.
原文地址:https://www.cnblogs.com/YCuangWhen/p/5237582.html