Submission #683526

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
683526	2023-01-18 16:25:02	rainboy	Arranging Tickets (JOI17_arranging_tickets)	C11	0 / 100	1 ms	296 KiB

arranging_tickets

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#include <stdio.h>
#include <string.h>
#define N 100000
#define M 200000
int max(int a, int b) { return a > b ? a : b; }
int main() {
  static int xx[N], yy[N], cc[N], dd[M];
  int n, m, i, a, b, l, r, tmp, ans;
  scanf("%d%d", &m, &n);
  for (i = 0; i < n; i++)
    scanf("%d%d%d", &xx[i], &yy[i], &cc[i]);
  ans = 0;
  for (a = 0; a < m; a++) {
    memset(dd, 0, m * sizeof *dd);
    for (i = 0; i < n; i++) {
      l = (xx[i] - a + m) % m, r = (yy[i] - a + m) % m;
      if (l > r)
        tmp = l, l = r, r = tmp;
      dd[l]++, dd[r]--;
    }
    for (b = 1; b < m; b++)
      dd[b] += dd[b - 1];
    for (b = 0; b < m; b++)
      ans = max(ans, dd[b]);
  }
  printf("%d\n", (ans + 1) / 2);
 
 
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Compilation message (stderr)

arranging_tickets.c: In function 'main':
arranging_tickets.c:13:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  scanf("%d%d", &m, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~
arranging_tickets.c:15:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   scanf("%d%d%d", &xx[i], &yy[i], &cc[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 35
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 15