Cod sursa(job #3293237)

Utilizator ax_dogaruDogaru Alexandru ax_dogaru Data 10 aprilie 2025 20:49:18
Problema Prefix Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.7 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin("prefix.in");
ofstream fout("prefix.out");

int t, pref[1000005];
string s;

void prefix() {
    int j;
    for(int i=1; i<s.size(); i++) {
        j=pref[i-1];
        while(s[i]!=s[j] && j>0) {
            j=pref[j-1];
        }
        if(s[i]==s[j]) {
            j++;
        }
        pref[i]=j;
    }
}

int main()
{
    fin >> t;
    while(t--) {
        int maxi=0;
        fin >> s;
        prefix();
        for(int i=0; i<s.size(); i++) {
            if((i+1)%(i-pref[i]+1)==0 && pref[i]!=0) {
                maxi=max(i+1, maxi);
            }
        }
        fout << maxi << "\n";
    }
    return 0;
}