/*************************************************************************
* *
* XVIII Olimpiada Informatyczna *
* *
* Zadanie: Okresowosc *
* Autor: Marcin Pilipczuk *
* Zlozonosc czasowa: O(n) *
* Opis: Rozwiazanie wzorcowe *
* *
*************************************************************************/
#include <cstdio>
#include <iostream>
#include <algorithm>
#include <set>
#include <map>
#include <stack>
#include <list>
#include <queue>
#include <deque>
#include <cctype>
#include <string>
#include <vector>
#include <sstream>
#include <iterator>
#include <numeric>
#include <cmath>
using namespace std;
typedef vector <int > VI;
typedef vector < VI > VVI;
typedef long long LL;
typedef vector < LL > VLL;
typedef vector < double > VD;
typedef vector < string > VS;
typedef pair<int,int> PII;
typedef vector <PII> VPII;
typedef istringstream ISS;
#define ALL(x) x.begin(),x.end()
#define REP(i,n) for (int i=0; i<(n); ++i)
#define FOR(var,pocz,koniec) for (int var=(pocz); var<=(koniec); ++var)
#define FORD(var,pocz,koniec) for (int var=(pocz); var>=(koniec); --var)
#define FOREACH(it, X) for(__typeof((X).begin()) it = (X).begin(); it != (X).end(); ++it)
#define PB push_back
#define PF push_front
#define MP(a,b) make_pair(a,b)
#define ST first
#define ND second
#define SIZE(x) (int)x.size()
const int N = 200 * 1000 + 100;
char text[N];
int n;
int psufy[N];
int r;
int p[N];
/* Wypelnia tablice P od pozycji a wlacznie do b wlacznie;
* zaklada ze do pozycji a wylacznie jest juz wypelniona */
void generuj_p(int a, int b){
while (a <= 1)
p[a++] = 0;
int x = p[a - 1];
while(a <= b){
while(x > 0 && text[a-1] != text[x])
x = p[x];
if (x || text[a-1] == text[0])
x++;
p[a++] = x;
}
}
int main(){
int testy;
scanf("%d", &testy);
while(testy--){
scanf("%s", text);
n = strlen(text);
generuj_p(0, n);
int x = p[n];
r = 0;
while (x > 0){
psufy[r++] = x;
x = p[x];
}
for (int i = 0; i < r - i - 1; ++i)
swap(psufy[i], psufy[r - i - 1]);
psufy[r++] = n;
for (int i = 0; i < psufy[0]; ++i)
text[i] = '0';
if (psufy[0] > 1)
text[psufy[0]-1] = '1';
generuj_p(0, psufy[0]);
for (int k = 1; k < r; ++k){
if (psufy[k-1] * 2 >= psufy[k]){ // Przypadek 1, bez dziury
for (int i = 2 * psufy[k-1] - psufy[k]; i < psufy[k-1]; ++i)
text[i + psufy[k] - psufy[k-1]] = text[i];
generuj_p(psufy[k-1] + 1, psufy[k]);
} else { // Przypadek 2, dziura
int s = psufy[k] - 2 * psufy[k-1];
for (int i = 0; i < s; ++i)
text[i + psufy[k-1]] = '0';
generuj_p(psufy[k-1] + 1, psufy[k-1] + s);
int c = p[psufy[k-1] + s];
if (c > 0 && (psufy[k-1] + s) % (psufy[k-1] + s - c) == 0){
text[s + psufy[k-1] - 1] = '1';
generuj_p(psufy[k-1] + s, psufy[k-1] + s);
}
for (int i = 0; i < psufy[k-1]; ++i)
text[i + s + psufy[k-1]] = text[i];
generuj_p(psufy[k-1] + s + 1, psufy[k]);
}
}
printf("%s\n", text);
}
return 0;
}
Compilation message
okr.cpp: In function 'int main()':
okr.cpp:80:20: error: 'strlen' was not declared in this scope
n = strlen(text);
^
okr.cpp:77:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &testy);
^
okr.cpp:79:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s", text);
^
