BZOJ3942 [Usaco2015 feb]censoring

Maintain a stack ... If the stack at the top of the string to be deleted will be completely deleted, it is good to judge the words ... KMP on the line.

1 /**************************************************************2 problem:39423 User:rausen4 language:c++5 result:accepted6 time:224 Ms7 memory:11548 KB8 ****************************************************************/9  Ten#include <cstdio> One#include <cstring> A   - using namespacestd; - Const intN = 1e6 +5; the   - CharS1[n], s2[n], s[n]; - intNext[n], a[n], top; -   + intMain () { -     intI, J, Len; +Gets (S1 +1), gets (S2 +1); ALen = strlen (s2 +1); at      for(i =2, j = next[1] =0; S2[i]; ++i) { -          while(j && s2[i]! = s2[j +1]) J =Next[j]; -         if(S2[i] = = S2[j +1]) ++J; -Next[i] =J; -     } -      for(i =1; S1[i]; ++i) { inj = A[top], s[++top] =S1[i]; -          while(J && S2[j +1]! = S[top]) j =Next[j]; to         if(S[top] = = S2[j +1]) ++J; +A[top] =J; -         if(A[top] = = len) Top-=Len; the     } *S[top +1] =' /'; $Puts (S +1);Panax Notoginseng     return 0; -}

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(P.S. AC600 Memorial ~)

BZOJ3942 [Usaco2015 feb]censoring