Cod sursa(job #1653225)

Utilizator valentin50517Vozian Valentin valentin50517 Data 15 martie 2016 20:15:55
Problema Prefix Scor 60
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.67 kb
#include <bits/stdc++.h>

using namespace std;

char S[1000010];
int p[1000010];
int T,rs;

int i,k,l,n;
int main(){
	cin.tie(0);
	ios::sync_with_stdio(0);
    assert(freopen("prefix.in", "rt", stdin));
    assert(freopen("prefix.out", "wt", stdout));
	(cin >> T).ignore(1);
	while(T--){
		cin.getline(S+1,100010);
		l = k = rs = p[1] = 0;
		for(i = 2;S[i];i++){
			while(k && S[k+1] != S[i]) 
				k = p[k];
			if(S[k+1] == S[i]) k++;
			p[i] = k;
			
			if(k && i-k == l) n++;
			else
			if(k && i-k > l) l = i-k, n = 1;
			else n = 0;
			if(n && n >= l) rs = l*(n/l+1);
			//fout << S[i] << ' ' << k << ' ' << l << ' ' << n << ' ' << rs << '\n';
		}
		cout << rs << "\n"; 
	}
		
}