제출 #473595

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
473595	2021-09-15 17:07:49	rainboy	Alkemija (COCI18_alkemija)	C11	80 / 80	78 ms	9040 KiB

alkemija

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#include <stdio.h>
#include <stdlib.h>
#define N 100000
#define K 100000
int *hh[N], kk[N], *ii[K], nn[K];
void append(int i, int h) {
  int g = kk[i]++;
  if (g >= 2 && (g & g - 1) == 0)
    hh[i] = (int *) realloc(hh[i], g * 2 * sizeof *hh[i]);
  hh[i][g] = h;
}
int dd[K];
void dfs_i(int i);
void dfs_h(int h) {
  if (--dd[h] == 0) {
    int g;
    for (g = 0; g < nn[h]; g++)
      dfs_i(ii[h][g]);
  }
}
char in[N];
 
 
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컴파일 시 표준 에러 (stderr) 메시지

alkemija.c: In function 'append':
alkemija.c:12:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   12 |  if (g >= 2 && (g & g - 1) == 0)
      |                     ~~^~~
alkemija.c: In function 'main':
alkemija.c:45:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |  scanf("%d%d", &n, &m);
      |  ^~~~~~~~~~~~~~~~~~~~~
alkemija.c:47:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |   scanf("%d", &i), i--;
      |   ^~~~~~~~~~~~~~~
alkemija.c:52:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |  scanf("%d", &k);
      |  ^~~~~~~~~~~~~~~
alkemija.c:54:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |   scanf("%d%d", &m, &nn[h]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~
alkemija.c:57:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |    scanf("%d", &i), i--;
      |    ^~~~~~~~~~~~~~~
alkemija.c:62:4: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |    scanf("%d", &ii[h][i]), ii[h][i]--;
      |    ^~~~~~~~~~~~~~~~~~~~~~

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