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Cod sursa(job #655602)
#include<fstream>
#include<algorithm>
using namespace std;
#define SMAX 10000010
#define CMAX 25
#define PUTERE 101
#define PRIM1 100003
#define PRIM2 100019
typedef struct hashh
{
int unu,doi,ok;
} hashh;
int n;
hashh hashs[SMAX];
char s[SMAX];
int lungs,lungc,nrcuvpos;
int hashcunu,hashcdoi,copie;
int pozinceput,pozsfarsit,pozitiicandidat;
bool comp (hashh a, hashh b)
{
if (a.unu = b.unu)
return a.doi < b.doi; else
return a.unu < b.unu;
}
void preprocesare()
{
int i;
int puteremax1=1,puteremax2=1;
for (i=0; i<lungc; ++i)
{
hashs[0].unu = (hashs[0].unu * PUTERE + s[i]) % PRIM1;
hashs[0].doi = (hashs[0].doi * PUTERE + s[i]) % PRIM2;
if (i > 0)
{
puteremax1 = (puteremax1 * PUTERE) % PRIM1;
puteremax2 = (puteremax2 * PUTERE) % PRIM2;
}
}
for (i=1; i<=lungs - lungc; ++i)
{
hashs[i].unu = ((hashs[i-1].unu - (s[i-1] * puteremax1) % PRIM1 + PRIM1) * PUTERE + s[i + lungc - 1]) % PRIM1;
hashs[i].doi = ((hashs[i-1].doi - (s[i-1] * puteremax2) % PRIM2 + PRIM2) * PUTERE + s[i + lungc - 1]) % PRIM2;
}
nrcuvpos = lungs - lungc + 1;
sort(hashs, hashs+nrcuvpos, comp);
}
void cauta_inceput(int st, int dr)
{
int mijl = (st + dr) / 2;
if (st <= dr)
{
if (hashs[mijl].unu == hashcunu && hashs[mijl].doi == hashcdoi)
if (hashs[mijl].ok == 0)
{
pozinceput = mijl;
cauta_inceput(st, mijl-1);
} else
{
copie = 1;
return;
} else
if ((hashs[mijl].unu == hashcunu && hashs[mijl].doi > hashcdoi) || hashs[mijl].unu > hashcunu)
cauta_inceput(st, mijl-1); else
cauta_inceput(mijl+1, dr);
}
}
void cauta_sfarsit(int st, int dr)
{
int mijl = (st + dr) / 2;
if (st <= dr)
{
if (hashs[mijl].unu == hashcunu && hashs[mijl].doi == hashcdoi)
{
pozsfarsit = mijl;
cauta_sfarsit(mijl+1, dr);
} else
if ((hashs[mijl].unu == hashcunu && hashs[mijl].doi > hashcdoi) || hashs[mijl].unu > hashcunu)
cauta_sfarsit(st, mijl-1); else
cauta_sfarsit(mijl+1, dr);
}
}
void read()
{
int i;
char c[CMAX];
ifstream fin("abc2.in");
fin.get(s, SMAX); fin.get();
lungs = (int)strlen(s);
while ( !fin.eof() )
{
fin.get(c, CMAX); fin.get();
if (lungc == 0)
{
lungc = (int)strlen(c);
preprocesare();
}
hashcunu = hashcdoi = 0;
for (i=0; i<(int)strlen(c); ++i)
{
hashcunu = (hashcunu * PUTERE + c[i]) % PRIM1;
hashcdoi = (hashcdoi * PUTERE + c[i]) % PRIM2;
}
pozinceput = pozsfarsit = -1; copie = 0;
cauta_inceput(0, nrcuvpos);
if (copie == 0 && pozinceput != -1)
cauta_sfarsit(0,nrcuvpos);
if (pozinceput != -1)
{
pozitiicandidat += pozsfarsit - pozinceput + 1;
for (i=pozinceput; i<=pozsfarsit; ++i)
hashs[i].ok = 1;
}
}
}
void write()
{
ofstream fout("abc2.out");
fout<<pozitiicandidat<<'\n';
fout.close();
}
int main()
{
read();
write();
return 0;
}