제출 #1049088

#제출 시각UTC-0아이디문제언어결과실행 시간메모리
10490882024-08-08 13:16:39rainboyBrought Down the Grading Server? (CEOI23_balance)C11
50 / 100
161 ms33012 KiB
#include <stdio.h>
#include <stdlib.h>
#define N 100000
#define M 500000
int ij[M]; char used[M];
int *eh[N], eo[N], n, m, k;
int ii_[N], n_;
void append(int i, int h) {
int o = eo[i]++;
if (o == 0) {
eh[i] = (int *) malloc(2 * sizeof *eh[i]);
ii_[n_++] = i;
} else if (o >= 2 && (o & o - 1) == 0)
eh[i] = (int *) realloc(eh[i], o * 2 * sizeof *eh[i]);
eh[i][o] = h;
}
int hh[M], cnt;
void dfs(int i) {
while (eo[i]) {
int h = eh[i][--eo[i]], j = i ^ ij[h];
if (!used[h])
used[h] = 1, dfs(j), hh[cnt++] = h;
}
 
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컴파일 시 표준 에러 (stderr) 메시지

balance.c: In function 'append':
balance.c:17:30: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   17 |  } else if (o >= 2 && (o & o - 1) == 0)
      |                            ~~^~~
balance.c: In function 'main':
balance.c:82:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |  scanf("%d%d%d", &k, &m, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
balance.c:85:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |    scanf("%d", &ii[h * k + g]), ii[h * k + g]--;
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~
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