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Cod sursa(job #328256)
#include<fstream>
#include<cstring>
#include<algorithm>
#define MaxN 1000005
#define MaxM 50005
#define MaxL 25
using namespace std;
ifstream fin("abc2.in");
ofstream fout("abc2.out");
char B[MaxN],A[MaxL];
int pi[MaxN],pos[MaxN],N,M,n,k;
bool ok[MaxN];
void prefix(char A[])
{ int i, q=0;
for(i=2,pi[1]=0;i<=N;i++)
{ while(q&&A[i]!=A[q+1])
q=pi[q];
if(A[i]==A[q+1]) q++;
pi[i]=q;
}
}
void KMP(char A[],char B[])
{ int i, q=0;
for(i=1;i<=M;i++)
{ while(q&&A[q+1]!=B[i])
q=pi[q];
if(A[q+1]==B[i]) q++;
if(q==N)
{ q=pi[N];
n++;
pos[n]=i-N;
}
}
}
int main()
{ int i;
fin.getline(B, MaxN);
M=strlen(B);
for(i=M+1;i;i--) B[i]=B[i-1];
B[0]=' ';
while(!fin.eof())
{ fin.getline(A, MaxL);
N=strlen(A);
for(i=N+1;i;i--) A[i]=A[i-1];
A[0]=' ';
prefix(A);
KMP(A,B);
for(i=0;i<=N;i++) A[i]='\0';
}
sort(pos+1,pos+1+n);
k=0;
for(i=1;i<=n;i++)
ok[pos[i]]=1;
for(i=0;i<=M;i++)
if(ok[i]) k++;
fout<<k;
return 0;
}