"uva644"immediate decodability (Trie

Test Instructions Translation

There are multiple sets of data in the subject. Each set of data gives a string containing only ' 0 ' and ' 1 ' at the end of "9", if there is another substring in it, output "set &case is not immediately decodable", otherwise output "set & Case is immediately decodable ". NewLine. The case is counted starting from 1.

Thank @fuko_ibuki for the translation

Title Description

Pdf

Input/output format Input Format:

output Format:

Input/Output sample Input Sample # #:Copy

0110001000009011001000009

Sample # # of output:Copy

Set 1 is immediately decodableset 2 are not immediately decodable

Exercises

It's a relatively simple trie question.

First, because lazy special handling, first ordered by length, and then from small to large enumeration of each string, and at the end of marking.

If a marked point is passed, the previous string is the prefix.

1 /*2 Qwerta3 UVA644 Immediate decodability4 Accepted5 Code C++,0.99KB6 Submission Time 2018-10-19 15:04:587 time consuming/memory8 50ms, 0KB9 */Ten#include <algorithm> One#include <iostream> A#include <cstring> -#include <cstdio> - using namespacestd; the strings[ One]; - BOOLcmpstringQaq,stringqwq) { -     returnQaq.length () <qwq.length (); - } + structemm{ -     intnxt[2],tag; +}a[ the]; A intMain () at { -     //freopen ("a.in", "R", stdin); -     intt=0; -      while(++t&&cin>>s[1]) -     { -         intn=1; in          Do{if(s[n][0]=='9') Break; -} while(cin>>s[++n]); ton--; +Sort (s+1, s+n+1, CMP); -         intCnt=0; theMemset (A,0,sizeof(a)); *         intflag=0; $          for(intC=1; c<=n&&!flag;++c)Panax Notoginseng         { -             intk=0; the              for(intI=0; I<s[c].length (); + +i) +             { A                 if(!a[k].nxt[s[c][i]-'0']) thea[k].nxt[s[c][i]-'0']=++CNT; +k=a[k].nxt[s[c][i]-'0']; -                 if(A[k].tag) flag++; $             } $a[k].tag=1; -         } -         if(!flag) theprintf"Set%d is immediately decodable\n", T); -         ElseWuyiprintf"Set%d is not immediately decodable\n", T); the     } -     return 0; Wu}

"uva644"immediate decodability (Trie