This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <stdio.h>
#include <string.h>
#define N 50
int max(int a, int b) { return a > b ? a : b; }
void zzz(int *aa, int *zz, int n) {
int i, l, r;
memset(zz, 0, n * sizeof *zz);
for (i = 1, l = 0, r = 0; i < n; i++)
if (i + zz[i - l] < r)
zz[i] = zz[i - l];
else {
l = i, r = max(r, i);
while (r < n && aa[r] == aa[r - l])
r++;
zz[i] = r - l;
}
}
int main() {
static int aa[N], zz[N];
int n, k, h, i, j;
scanf("%d%d", &n, &k);
for (i = 0; i < n; i++)
scanf("%d", &aa[i]);
for (i = 0; i < n; i++) {
zzz(aa + i, zz, n - i);
for (j = i + 1; j < n; j++)
if (zz[j - i] >= (j - i) * (k - 1)) {
printf("%d\n", j - i);
for (h = i; h < j; h++)
printf("%d ", aa[h]);
printf("\n");
return 0;
}
}
printf("-1\n");
return 0;
}
Compilation message (stderr)
Main.c: In function 'main':
Main.c:27:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
27 | scanf("%d%d", &n, &k);
| ^~~~~~~~~~~~~~~~~~~~~
Main.c:29:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
29 | scanf("%d", &aa[i]);
| ^~~~~~~~~~~~~~~~~~~
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