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Submission #587318

# Submission time Handle Problem Language Result Execution time Memory
587318 2022-07-01T16:13:35 Z rainboy Palindromi (COCI22_palindromi) C
110 / 110
 92 ms 32168 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define N	100000
#define LN	17	/* LN = ceil(log2(N)) */
#define N_	(N * (LN + 4))

int len[N_], tt[N_][2], ff[N_], fff[N_][2];

int node(int l) {
	static int _ = 1;

	len[_] = l;
	return _++;
}

int ds[N], ans[N], *aa[N], head[N], cnt[N], cnt_[N], ss0[N], ss1[N], pp[N], qq[N];

void append(int i, int a) {
	int s;

	if (cnt[i] == cnt_[i]) {
		int *bb = (int *) malloc((cnt_[i] *= 2) * sizeof *bb), h;

		for (h = 0; h < cnt[i]; h++)
			bb[h] = aa[i][(head[i] + h) % cnt[i]];
		free(aa[i]);
		aa[i] = bb, head[i] = 0;
	}
	aa[i][(head[i] + cnt[i]++) % cnt_[i]] = a;
	s = qq[i];
	if (len[s] == cnt[i] - 1 || aa[i][(head[i] + cnt[i] - 2 - len[s]) % cnt_[i]] != a)
		s = fff[s][a];
	if (!tt[s][a]) {
		int u = node(len[s] + 2), f = len[u] == 1 ? ss0[i] : tt[fff[s][a]][a];

		ff[u] = f;
		memcpy(fff[u], fff[f], sizeof fff[f]), fff[u][aa[i][(head[i] + cnt[i] - 1 - len[f]) % cnt_[i]]] = f;
		tt[s][a] = u;
		ans[i]++;
	}
	s = tt[s][a];
	qq[i] = s;
	if (len[s] == cnt[i])
		pp[i] = s;
}

void prepend(int i, int a) {
	int s;

	if (cnt[i] == cnt_[i]) {
		int *bb = (int *) malloc((cnt_[i] *= 2) * sizeof *bb), h;

		for (h = 0; h < cnt[i]; h++)
			bb[h] = aa[i][(head[i] + h) % cnt[i]];
		free(aa[i]);
		aa[i] = bb, head[i] = 0;
	}
	head[i] = (head[i] - 1 + cnt_[i]) % cnt_[i], cnt[i]++, aa[i][head[i]] = a;
	s = pp[i];
	if (len[s] == cnt[i] - 1 || aa[i][(head[i] + 1 + len[s]) % cnt_[i]] != a)
		s = fff[s][a];
	if (!tt[s][a]) {
		int u = node(len[s] + 2), f = len[u] == 1 ? ss0[i] : tt[fff[s][a]][a];

		ff[u] = f;
		memcpy(fff[u], fff[f], sizeof fff[f]), fff[u][aa[i][(head[i] + len[f]) % cnt_[i]]] = f;
		tt[s][a] = u;
		ans[i]++;
	}
	s = tt[s][a];
	pp[i] = s;
	if (len[s] == cnt[i])
		qq[i] = s;
}

int find(int i) {
	return ds[i] < 0 ? i : (ds[i] = find(ds[i]));
}

void join(int i, int j) {
	int h;

	i = find(i);
	j = find(j);
	if (i == j)
		return;
	if (cnt[i] > cnt[j]) {
		ds[j] = i;
		for (h = 0; h < cnt[j]; h++)
			append(i, aa[j][(head[j] + h) % cnt_[j]]);
		free(aa[j]);
	} else {
		ds[i] = j;
		for (h = cnt[i] - 1; h >= 0; h--)
			prepend(j, aa[i][(head[i] + h) % cnt_[i]]);
		free(aa[i]);
	}
}

int main() {
	static char cc[N + 1];
	int n, h, i, j;

	scanf("%d%s", &n, cc);
	for (i = 0; i < n; i++) {
		aa[i] = (int *) malloc((cnt_[i] = 2) * sizeof *aa[i]);
		head[i] = 0;
		ss0[i] = node(0), ss1[i] = node(-1);
		ff[ss0[i]] = ss1[i];
		fff[ss0[i]][0] = fff[ss0[i]][1] = ss1[i], fff[ss1[i]][0] = fff[ss1[i]][1] = ss1[i];
		pp[i] = qq[i] = ss0[i];
		append(i, cc[i] - '0');
	}
	memset(ds, -1, n * sizeof *ds);
	for (h = 0; h < n - 1; h++) {
		scanf("%d%d", &i, &j), i--, j--;
		join(i, j);
		printf("%d\n", ans[find(i)]);
	}
	return 0;
}

Compilation message

Main.c: In function 'main':
Main.c:106:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |  scanf("%d%s", &n, cc);
      |  ^~~~~~~~~~~~~~~~~~~~~
Main.c:118:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  118 |   scanf("%d%d", &i, &j), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 288 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 292 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 288 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 292 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 292 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 480 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 556 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 14732 KB Output is correct
2 Correct 41 ms 17572 KB Output is correct
3 Correct 38 ms 15220 KB Output is correct
4 Correct 40 ms 17776 KB Output is correct
5 Correct 39 ms 16128 KB Output is correct
6 Correct 38 ms 17244 KB Output is correct
7 Correct 39 ms 15908 KB Output is correct
8 Correct 39 ms 16888 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 288 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 292 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 292 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 480 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 1 ms 556 KB Output is correct
27 Correct 43 ms 14732 KB Output is correct
28 Correct 41 ms 17572 KB Output is correct
29 Correct 38 ms 15220 KB Output is correct
30 Correct 40 ms 17776 KB Output is correct
31 Correct 39 ms 16128 KB Output is correct
32 Correct 38 ms 17244 KB Output is correct
33 Correct 39 ms 15908 KB Output is correct
34 Correct 39 ms 16888 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 85 ms 21704 KB Output is correct
37 Correct 82 ms 18564 KB Output is correct
38 Correct 83 ms 22148 KB Output is correct
39 Correct 92 ms 19728 KB Output is correct
40 Correct 56 ms 17584 KB Output is correct
41 Correct 55 ms 16488 KB Output is correct
42 Correct 39 ms 16908 KB Output is correct
43 Correct 40 ms 15884 KB Output is correct
44 Correct 38 ms 16760 KB Output is correct
45 Correct 39 ms 15792 KB Output is correct
46 Correct 78 ms 32168 KB Output is correct
47 Correct 69 ms 20824 KB Output is correct