Submission #882159

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
882159	2023-12-02 17:42:09	rainboy	Shell (info1cup18_shell)	C11	100 / 100	200 ms	37756 KiB

shell

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#include <stdio.h>
#include <stdlib.h>
#define N 1000000
#define MD  1000000007
int *ej[N], eo[N], in[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 main() {
  static int ii[N], qu[N], hh[N], dp[N];
  int n, m, k, cnt, g, h, i, j, s, t, o, ans;
  scanf("%d%d%d", &n, &m, &k);
  for (g = 0; g < k; g++)
    scanf("%d", &ii[g]), ii[g]--;
  for (i = 0; i < n; i++)
    ej[i] = (int *) malloc(2 * sizeof *ej[i]);
  while (m--) {
    scanf("%d%d", &i, &j), i--, j--;
    append(i, j), in[j]++;
  }
  cnt = 0;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

shell.c: In function 'append':
shell.c:12:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   12 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
shell.c: In function 'main':
shell.c:21:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |  scanf("%d%d%d", &n, &m, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
shell.c:23:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |   scanf("%d", &ii[g]), ii[g]--;
      |   ^~~~~~~~~~~~~~~~~~~
shell.c:27:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 45 / 45
• Subtask 3: 20 / 20
• Subtask 4: 25 / 25