Submission #536322

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
536322	2022-03-12 21:42:55	rainboy	우호 조약 체결 (JOI14_friends)	C11	35 / 100	243 ms	26868 KiB

friends

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#include <stdio.h>
#include <string.h>
#define N 5000
int n;
char adj[N][N];
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];
  }
}
char visited[N];
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

friends.c: In function 'main':
friends.c:49:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
friends.c:51:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 30 / 30
• Subtask 3: 0 / 65