Submission #545914

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
545914	2022-04-05 16:08:59	rainboy	Palindromic Partitions (CEOI17_palindromic)	C11	100 / 100	139 ms	16748 KiB

palindromic

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#include <stdio.h>
#include <string.h>
#define N 1000000
int main() {
  int t;
  scanf("%d", &t);
  while (t--) {
    static char cc[N + 1], cc_[N * 2 + 2];
    static int rr[N * 2 + 1];
    int n, i, j, o, x, ans;
    scanf("%s", cc), n = strlen(cc);
    for (i = 0; i <= n * 2; i++)
      cc_[i] = i % 2 == 0 ? ' ' : (i / 2 % 2 == 0 ? cc[i / 4] : cc[n - 1 - i / 4]);
    cc_[n * 2 + 1] = 0;
    for (i = 0, o = x = 0; i <= n * 2; i++)
      if (o + o - i >= 0 && i + rr[o + o - i] < x)
        rr[i] = rr[o + o - i];
      else {
        o = i;
        while (x <= n * 2 && o + o - x >= 0 && cc_[x] == cc_[o + o - x])
          x++;
        rr[i] = x - o;
      }
    ans = 0;
    for (i = 0, j = 2; j <= n; j += 2)
      if (rr[i + j] > j - i)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

palindromic.c: In function 'main':
palindromic.c:9:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%d", &t);
      |  ^~~~~~~~~~~~~~~
palindromic.c:15:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   scanf("%s", cc), n = strlen(cc);
      |   ^~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40