Submission #683598

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
683598	2023-01-18 20:19:04	rainboy	Railway Trip (JOI17_railway_trip)	C11	0 / 100	525 ms	10828 KiB

railway_trip

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#include <stdio.h>
#include <stdlib.h>
#define N 100000
#define INF 0x3f3f3f3f
int min(int a, int b) { return a < b ? a : b; }
int aa[N], ll[N], ll_[N], ddl[N], rr[N], rr_[N], ddr[N], n;
int *ej[N], eo[N];
void append(int i, int j) {
  int o = eo[i]++;
  if (o >= 2 && (o & o - 1) == 0)
    ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
  ej[i][o] = j;
}
int bfs(int n, int s, int t) {
  static int qu[N], dd[N];
  int cnt, h, i, j, d, o;
  for (i = 0; i < n; i++)
    dd[i] = n;
  cnt = 0;
  dd[s] = 0, qu[cnt++] = s;
  for (h = 0; h < cnt; h++) {
    i = qu[h], d = dd[i] + 1;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

railway_trip.c: In function 'main':
railway_trip.c:72:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |  scanf("%d%d%d", &n, &k, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
railway_trip.c:74:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~
railway_trip.c:115:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  115 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 25
• Subtask 4: 0 / 55