Cod sursa(job #3338452)

Utilizator iustin.dumiDumitrescu Iustin iustin.dumi Data 3 februarie 2026 13:34:24
Problema Abc2 Scor 0
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.52 kb
#include <bits/stdc++.h>
using namespace std;
ifstream fin("abc2.in");
ofstream fout("abc2.out");
int n,i,j,x,op,h1,h2,p1=1,sol;
string a,b;
unordered_map<int,int> fr;
int main()
{ fin>>a;
  while(fin>>b)
  {if(n==0) n=b.size();
   h1=0;
   for(i=0;i<n;i++)
       h1=3*h1+b[i]-'a';
  fr[h1]=1;
  }
  for(i=0;i<n;i++)
  {if(i) p1*=3;
   h2=3*h2+a[i]-'a';
  }

  sol+=fr[h2];
  for(i=n;i<a.size();i++)
  {h2=h2-p1*(a[i-n]-'a');
   h2*=3;
   h2+=a[i]-'a';
   sol+=fr[h2];
  }
  fout<<sol;
    return 0;
}