Cod sursa(job #1640203)

Utilizator daniel.grosuDaniel Grosu daniel.grosu Data 8 martie 2016 16:22:28
Problema Prefix Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.41 kb
// Template v2
#define pb push_back
#define mp make_pair
#define first x
#define second y
#define l(x) x<<1
#define r(x) x<<1 | 1
#define P 73
#define MOD1 3000017
#define MOD2 3000541
#include<bits/stdc++.h>

using namespace std;

typedef long long LL;
typedef long double LD;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef pair<LL, LL> PLL;
typedef pair<double, double> PKK;
// primes less than 100
const int PRIM[] = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97};
const int CMAX = 10005;
const int MOD = 1000000007;
const int NMAX = 1000005;
const short INF16 = 32000;
const int INF = int(1e9);
const LL INF64 = LL(1e18);
const LD EPS = 1e-9, PI = acos(-1.0);

char A[NMAX];
int n, pi[NMAX];
int t,rs;
void prefix()
{
    int q=0;
    pi[1]=0;
    for(int i=2; A[i]; ++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-pi[i])==0 && pi[i]!=0)
            rs=i;
    }
}

void read()
{
    cin>>t;
    cin.getline(A+1, NMAX+2);
    while(t--){
        rs=0;
        cin.getline(A+1, NMAX+2);
        prefix();
        cout<<rs<<"\n";
    }
}

int main() {
    cin.tie(0);
    ios_base::sync_with_stdio(0);
    cout << setprecision(16) << fixed;
    
    assert(freopen("prefix.in", "rt", stdin));
    assert(freopen("prefix.out", "wt", stdout));
    
    read();

    return 0;
}