Cod sursa(job #2056618)

Utilizator cezinatorCezar D cezinator Data 4 noiembrie 2017 12:31:16
Problema Prefix Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.66 kb
#include <fstream>
#include <string.h>

using namespace std;
ifstream fin("prefix.in");
ofstream fout("prefix.out");
char A[1000025],B[1000025];
int i,n,pi[1000025],M,N,pos[1000025],T,imax,x,q;
void prefix()
{
    imax=0;
    int i;
    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(q && i%(i-q)==0) imax=i;
    }
    fout<<imax<<'\n';
}
int main()
{
    fin>>T;
    fin.get();
    for(int y=1;y<=T;y++)
    {
        fin.getline(A,1000025);
        M=strlen(A);
        for(i=M;i;--i) A[i]=A[i-1];A[0]=' ';
        q=0;
        prefix();
    }
    return 0;
}