Submission #848833

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
848833	2023-09-13 15:01:49	rainboy	Beech Tree (IOI23_beechtree)	C++17	22 / 100	70 ms	15632 KiB

beechtree

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#include "beechtree.h"
#include <cstdlib>
using namespace std;
typedef vector<int> vi;
const int N = 200000, M = 200000;
int max(int a, int b) { return a > b ? a : b; }
unsigned int X = 12345;
int rand_() {
  return (X *= 3) >> 1;
}
int cc[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;
}
void sort(int *ii, int l, int r) {
  while (l < r) {
 
 
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Compilation message (stderr)

beechtree.cpp: In function 'void append(int, int)':
beechtree.cpp:24:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   24 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~

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• Subtask 2: 5 / 5
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• Subtask 9: 0 / 12