Cod sursa(job #612490)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 8 septembrie 2011 02:25:53
Problema Prefix Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.53 kb
#include<fstream.h>
#define N 10000000
char s[N];
long n,k,p[N],i,d,t;
int main()
{ifstream f("prefix.in");
ofstream g("prefix.out");
f>>t;
while(t--)
      {f>>s;
      k=p[1]=d=0;
      n=strlen(s);
      for(i=n;i;i--)
            s[i]=s[i-1];
      for(i=2;i<=n;i++)
            {while(k>0&&s[k+1]!=s[i])
                    k=p[k];
            if(s[k+1]==s[i])
                    k++;
            p[i]=k;}
      for(i=1;i<=n;i++)
      if(p[i]&&i%(i-p[i])==0)
            d=i;
      g<<d<<"\n";}
return 0;}