Pagini recente » Cod sursa (job #570136) | Cod sursa (job #1501251) | Cod sursa (job #1147390) | Cod sursa (job #2054164) | Cod sursa (job #2432777)
#include <bits/stdc++.h>
using namespace std;
ifstream fin("abc2.in");
ofstream fout("abc2.out");
const int BASE = 3;
unsigned int getHashCode(string str) {
unsigned int h = 0;
for (int i = 0; i < (int) str.size(); i++)
h = h * BASE + (str[i] - 'a');
return h;
}
int main() {
string str; fin >> str;
vector<unsigned int> patterns; int len = 0;
string pattern;
while (fin >> pattern) {
len = pattern.size();
patterns.push_back(getHashCode(pattern));
}
sort(patterns.begin(), patterns.end());
unsigned int h = getHashCode(str.substr(0, len));
int sol = binary_search(patterns.begin(), patterns.end(), h);
unsigned int pwr = 1;
for (int i = 1; i < len; i++)
pwr *= BASE;
auto find = [&](unsigned int val) {
int lo = -1, hi = patterns.size();
while (hi - lo > 1) {
int md = (lo + hi) >> 1;
if (patterns[md] < val)
lo = md;
else
hi = md;
}
return 0 <= hi && hi < (int) patterns.size() && patterns[hi] == val;
};
for (int i = len; i < (int) str.size(); i++) {
h = (h - (str[i - len] - 'a') * pwr) * BASE + (str[i] - 'a');
sol += find(h);
}
fout << sol << '\n';
fout.close();
return 0;
}