Submission #430547

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
4305472021-06-16 15:39:12rainboyToy Train (IOI17_train)C++98
38 / 100
2001 ms108196 KiB
#pragma GCC optimize("O3")
#include "train.h"
#include <stdlib.h>
using namespace std;
const int N = 5000;
typedef vector<int> vi;
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 dd[N][N + 1], out[N], n;
vi rr;
void dfs(int i, int t) {
int o;
if (--dd[i][t] != 0)
return;
dd[i][t] = -1;
for (o = eo[i]; o--; ) {
 
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Compilation message (stderr)

train.cpp: In function 'void append(int, int)':
train.cpp:16:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   16 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
train.cpp: In function 'vi who_wins(vi, vi, vi, vi)':
train.cpp:42:27: warning: unused variable 'j' [-Wunused-variable]
   42 |  int m = uu.size(), h, i, j, t;
      |                           ^
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