Pagini recente » Cod sursa (job #1710417) | Cod sursa (job #1952667) | Cod sursa (job #3156117) | Cod sursa (job #545842) | Cod sursa (job #2417679)
#include <bits/stdc++.h>
#define lld long long
#define mod 10007
using namespace std;
ifstream fin("abc2.in");
ofstream fout("abc2.out");
class lst
{
private:
struct nod
{
nod *urm;
unsigned int value;
nod(unsigned int v)
{
urm = 0;
value = v;
}
};
nod *root;
public:
lst()
{
root = 0;
}
void add(unsigned int v)
{
nod *nw = new nod(v);
if (!root)
{
root = nw;
return;
}
nw -> urm = root;
root = nw;
}
bool exists(unsigned int v)
{
if (!root) return false;
nod *act = root;
while (act)
{
if(act->value == v) return true;
act = act->urm;
}
return false;
}
};
lst dispersionTable[mod+1];
char s[10000005], p[25];
int ln,lp, ans;
unsigned int wh;
unsigned int hsh, pw[25];
const unsigned int pww = 3;
int main()
{
fin>>s;
pw[0] = 1;
for (int i=1; i<20; ++i)
pw[i] = pw[i-1] * pww;
fin>>p;
lp = strlen(p);
do
{
hsh = 0;
for (int i=lp-1; i>=0; --i)
hsh = hsh + (p[i]-'a')*pw[lp-i-1];
wh = hsh % mod;
if (!dispersionTable[wh].exists(hsh))
dispersionTable[wh].add(hsh);
}
while (fin>>p);
hsh = 0;
for (int i=lp-1; i>=0; --i)
{
s[i]-='a';
hsh = hsh + s[i]*pw[lp-i-1];
}
wh = hsh % mod;
if (dispersionTable[wh].exists(hsh))++ans;
for (int i=lp; s[i]; ++i)
{
s[i]-='a';
hsh = (hsh - s[i-lp]*pw[lp-1]) *pww + s[i];
wh = hsh%mod;
if (dispersionTable[wh].exists(hsh))++ans;
}
fout<<ans<<'\n';
return 0;
}