Submission #823961

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
823961	2023-08-13 10:45:11	rainboy	Travelling Trader (CCO23_day2problem2)	C11	11 / 25	150 ms	34980 KiB

Main

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#include <stdio.h>
#include <stdlib.h>
 
#define N 200000
 
long long max(long long a, long long b) { return a > b ? a : b; }
 
int *ej[N], eo[N], ww[N], n, k;
 
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;
}
 
long long dp[N]; int pp[N], jj[N];
 
void dfs(int p, int i) {
  int o;
 
  pp[i] = p, dp[i] = -1, jj[i] = -1;
  for (o = eo[i]; o--; ) {
    int j = ej[i][o];
 
    if (j != p) {
      dfs(i, j);
      if (dp[i] < dp[j])
        dp[i] = dp[j], jj[i] = j;
 
 
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Compilation message (stderr)

Main.c: In function 'append':
Main.c:13:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   13 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
Main.c: In function 'main':
Main.c:66:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |  scanf("%d%d", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:70:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~
Main.c:74:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |   scanf("%d", &ww[i]);
      |   ^~~~~~~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 0 / 7
• Subtask 3: 0 / 3
• Subtask 4: 0 / 4
• Subtask 5: 4 / 4
• Subtask 6: 5 / 5