http://poj.org/problem?id=2004 //* @author: 82638882@163.com import java.io.*; import java.util.Arrays; import java.util.Comparator; public class Main { static my[] s=new my[10001]; public static void main(String[] args) throws IOException { InputStreamReader is=new InputStreamReader(System.in); BufferedReader in=new BufferedReader(is); int l=0,max=-1,rr=-1; while(in.ready()) { String t=in.readLine(); s[l++]=new my(t); } Comparator< my> cp=new Comparator< my>() { public int compare(my o1, my o2) { return o1.l-o2.l; } }; Arrays.sort(s,0,l,cp); for(int i=0;i< l;i++) { for(int j=0;j< i;j++) { if(s[j].l==s[i].l) break; if(s[j].l!=s[i].l-1) continue; int cnt=0,k=0; while(k< s[j].l&&cnt< 2) { if(s[j].c[k]!=s[i].c[k+cnt]) cnt++; else k++; } if(cnt< 2) { if(s[i].n< s[j].n+1){ s[i].n=s[j].n+1; s[i].r=j; } } } } for(int i=0;i< l;i++) { if(s[i].n>max) { max=s[i].n; rr=i; } } p(rr); } static void p(int a) { if(s[a].r!=-1) p(s[a].r); System.out.println(s[a].s); } } class my { String s; int n=0; int l; int r=-1; char[] c; public my(String t) { s=t; l=s.length(); c=new char[l]; for(int i=0;i< l;i++) c[i]=s.charAt(i); Arrays.sort(c); } }
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