Submission #433990

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
433990	2021-06-20 13:26:30	rainboy	Mecho (IOI09_mecho)	C11	100 / 100	229 ms	9024 KiB

mecho

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#include <stdio.h>
#define N 800
int di[] = { -1, 1, 0, 0 };
int dj[] = { 0, 0, -1, 1 };
char cc[N][N + 1];
int dd_[N][N], dd[N][N], qu[N * N], n, s;
int solve(int im, int jm, int id, int jd, int t) {
  int i, j, head, cnt;
  for (i = 0; i < n; i++)
    for (j = 0; j < n; j++)
      dd[i][j] = n * n;
  head = cnt = 0;
  dd[im][jm] = 0, qu[head + cnt++] = im * n + jm;
  while (cnt) {
    int ij, h, d;
    ij = qu[cnt--, head++], i = ij / n, j = ij % n, d = dd[i][j] + 1;
    if (dd_[i][j] <= t + dd[i][j] / s)
      continue;
    if (i == id && j == jd)
      return 1;
    for (h = 0; h < 4; h++) {
      int i_ = i + di[h], j_ = j + dj[h];
 
 
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Compilation message (stderr)

mecho.c: In function 'main':
mecho.c:41:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |  scanf("%d%d", &n, &s);
      |  ^~~~~~~~~~~~~~~~~~~~~
mecho.c:43:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |   scanf("%s", cc[i]);
      |   ^~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100