Cod sursa(job #2056557)

Utilizator TudorFinaruTudor Cristian Finaru TudorFinaru Data 4 noiembrie 2017 12:19:45
Problema Prefix Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.97 kb
#include <fstream>
#include<string.h>
using namespace std;
ifstream f("prefix.in");
ofstream g("prefix.out");
int pi[1000004],N,M,n,imax;
char A[1000004];
void prefix()
{
    int i,q=0;
    for(i=2,pi[1]=0;i<=M;++i)
    {
        while(q&&A[q+1]!=A[i]) q=pi[q];
        if(A[q+1]==A[i]) q++;
        pi[i]=q;
        if(pi[i] && i%(i-pi[i])==0) imax=i;
    }
}

int main()
{
    int i,t;
    int ind;
    f>>t; f.get();
    for(ind=1;ind<=t;ind++)
    {

        f.getline(A,1001);
        M=strlen(A);
        for(i=M;i;--i)
            A[i]=A[i-1];
        A[0]=' ';

        prefix();
        g<<imax<<'\n';
    }

    /*int q=0;
    for(i=2;i<=N;++i)
    {
        while(q&&A[q+1]!=B[i]) q=pi[q];
        if(A[q+1]==B[i]) q++;
        if(q==M)
        {
            q=pi[M];
            ++n;
            pos[n]=i-M;
        }
    }
    g<<n<<'\n';
    for(i=1;i<=n;i++) g<<pos[i]<<' ';*/

    f.close();
    g.close();
    return 0;
}