Cod sursa(job #1558247)

Utilizator stoianmihailStoian Mihail stoianmihail Data 28 decembrie 2015 21:48:31
Problema Order Scor 0
Compilator c Status done
Runda Arhiva de probleme Marime 1.02 kb
#include <stdio.h>

#define aibSize 32768
#define NIL -1

int N;
int aib[aibSize + 1];

/**  Adauga valoarea "x" in aib.
  * val = 1: inserare.
  * val = -1: stergere.
**/
void add(int x, int val) {
  do {
    aib[x] += val;
    x += x & -x;
  } while (x <= aibSize);
}

/** Cauta elementul de pe pozitia "val" in aib. **/
int search(int val) {
  int x = 0, interval;
  for (interval = aibSize >> 1; interval; interval >>= 1) {
    if (aib[x + interval] < val) {
      val -= aib[x += interval];
    }
  }
  return x + 1;
}

int main(void) {
  int i, k, last = 2;
  FILE *f = fopen("order.in", "r");
  freopen("order.out", "w", stdout);

  /* Citirea datelor. */
  fscanf(f, "%d", &N);
  for (i = 1; i <= N; i++) {
    add(i, 1);
  }
  fclose(f);

  /* Calcularea solutiei si afisarea ei. */
  int limit = N - 1;
  for (i = 0; i < limit; i++) {
    fprintf(stdout, "%d ", k = search(last = (last + i) % (N - i)));
    add(k, NIL);
  }
  fprintf(stdout, "%d\n", N);
  fclose(stdout);

  /// Multumim Doamne!
  puts("Doamne ajuta!");
  return 0;
}