Submission #730954

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
730954	2023-04-26 16:48:12	rainboy	Monthly railway pass (LMIO18_menesinis_bilietas)	C11	100 / 100	169 ms	32780 KiB

menesinis_bilietas

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 500000
#define M 500000
int ds[N], sz[N];
int find(int i) {
  return ds[i] < 0 ? i : (ds[i] = find(ds[i]));
}
void join(int i, int j) {
  i = find(i);
  j = find(j);
  if (i == j)
    return;
  if (ds[i] > ds[j])
    ds[i] = j, sz[j] += sz[i];
  else {
    if (ds[i] == ds[j])
      ds[i]--;
    ds[j] = i, sz[i] += sz[j];
  }
}
int *ej[N], eo[N];
void append(int i, int j) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

menesinis_bilietas.c: In function 'append':
menesinis_bilietas.c:33:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   33 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
menesinis_bilietas.c: In function 'main':
menesinis_bilietas.c:43:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
menesinis_bilietas.c:50:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |   scanf("%d%d%s", &i, &j, s), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 6 / 6
• Subtask 3: 30 / 30
• Subtask 4: 35 / 35
• Subtask 5: 19 / 19