Cod sursa(job #2076088)

Utilizator stefdascalescuStefan Dascalescu stefdascalescu Data 26 noiembrie 2017 10:01:57
Problema Abc2 Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.13 kb
#include<bits/stdc++.h>
using namespace std;
ifstream f("abc2.in");
ofstream g("abc2.out");
long long nrcur;
char c[10000003];
int len,ln,sol;
int R;
long long v[50002];
char q[25];
int main()
{
    f>>c;
    R=strlen(c);
    while(f>>q)
    {
        ++len;
        long long p3=1;
        if(ln==0)
            ln=strlen(q);
        for(int j=ln-1;j>=0;--j)
            v[len]+=p3*(q[j]-'a'),p3*=3;
    }
    sort(v+1,v+len+1);
    long long p3=1;
    for(int j=0;j<=R-ln;++j)
    {
        if(j==0){
            for(int k=ln-1;k>=0;--k)
                nrcur+=p3*(c[k]-'a'),p3*=3;
            p3/=3;
        }
        else
        {
            nrcur-=p3*(c[j-1]-'a');
            nrcur*=3;
            nrcur+=(c[j+ln-1]-'a');
        }
        int b=1;
        int e=len;
        while(b<=e)
        {
            int m=(b+e)/2;
            if(v[m]==nrcur)
            {
                ++sol;
                break;
            }
            else
                if(v[m]>nrcur)
                    e=m-1;
                else
                    b=m+1;
        }
    }
    g<<sol;
    return 0;
}