Cod sursa(job #1845927)

Utilizator teoionescuIonescu Teodor teoionescu Data 11 ianuarie 2017 23:21:54
Problema Abc2 Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.91 kb
#include<iostream>
#include<fstream>
#include<cstring>
#include<cstdlib>
#include<set>
using namespace std;
typedef long long ll;
ifstream in("abc2.in");
ofstream out("abc2.out");

const int Nmax = 10000001;
char s[Nmax],cuv[21];
int n,ans;
set<ll> W[666013];

int main(){
    in.getline(s,Nmax);
    while(!in.eof()){
        in.getline(cuv,21);
        if(in.eof()) break;
        n=strlen(cuv);
        ll val=0;
        for(int i=0;i<n;i++) val = val*3 + cuv[i] - 'a';
        W[val%666013].insert(val);
    }
    ll pw=1; for(int i=1;i<n;i++) pw=pw*3;
    int sz=strlen(s);
    ll val=0;
    for(int i=0;i<sz;i++){
        if(i>=n){
            if(W[val%666013].find(val)!=W[val%666013].end()) ans++;
            val -= pw*(s[i-n]-'a');
        }
        val = val*3 + s[i] - 'a';
    }
    if(W[val%666013].find(val)!=W[val%666013].end()) ans++;
    out<<ans<<'\n';
    return 0;
}