Submission #481425

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
481425	2021-10-20 18:47:42	rainboy	Putovanje (COCI20_putovanje)	C11	110 / 110	70 ms	16004 KiB

putovanje

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#include <stdio.h>
#include <stdlib.h>
#define N 200000
long long min(long long a, long long b) { return a < b ? a : b; }
int ij[N - 1], aa[N - 1], bb[N - 1];
int *eh[N], eo[N];
void append(int i, int j) {
  int o = eo[i]++;
  if (o >= 2 && (o & o - 1) == 0)
    eh[i] = (int *) realloc(eh[i], o * 2 * sizeof *eh[i]);
  eh[i][o] = j;
}
int pp[N], qq[N], dd[N];
int dfs1(int p, int i, int d) {
  int o, j_, s, k_;
  pp[i] = p, dd[i] = d;
  s = 1, k_ = 0, j_ = -1;
  for (o = eo[i]; o--; ) {
    int h = eh[i][o], j = i ^ ij[h];
    if (j != p) {
      int k = dfs1(i, j, d + 1);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

putovanje.c: In function 'append':
putovanje.c:14:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   14 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
putovanje.c: In function 'main':
putovanje.c:82:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
putovanje.c:86:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   86 |   scanf("%d%d%d%d", &i, &j, &aa[h], &bb[h]), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 25 / 25
• Subtask 3: 65 / 65