oj.uz

답안 #545860

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
545860 2022-04-05T15:28:27 Z rainboy 우주 해적 (JOI14_space_pirate) C
80 / 100
 2000 ms 131220 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define N	100000
#define L	60	/* L = ceil(log2(10^18)) */

int *ej[N], eo[N], *ed[N * 6 + 1], eo_[N * 6 + 1], pp[N], pp_[L + 1][N], ii[N + 1], tt[N], tt_[N], n;
long long cc[N], bb[N], cc_[L + 1][N], k, time;

void init(int n, long long l, long long r) {
	int d;
	long long a;

	for (d = 1; d <= n; d++) {
		a = l / d * d;
		while (a < l)
			a += d;
		while (a >= l + d)
			a -= d;
		while (a <= r)
			eo_[a - l]++, a += d;
	}
	for (a = l; a <= r; a++)
		ed[a - l] = (int *) malloc(eo_[a - l] * sizeof *ed[a - l]), eo_[a - l] = 0;
	for (d = 1; d <= n; d++) {
		a = l / d * d;
		while (a < l)
			a += d;
		while (a >= l + d)
			a -= d;
		while (a <= r)
			ed[a - l][eo_[a - l]++] = d, a += d;
	}
}

void upd(int i, int b) {
	cc[i] -= b * time, bb[i] += b;
}

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;
}

void dfs1(int i, int t) {
	int o;

	if (tt_[i] != -1)
		return;
	tt_[i] = t;
	for (o = eo[i]; o--; ) {
		int j = ej[i][o];

		dfs1(j, t);
	}
}

void update(int i, long long k, int x) {
	int l;

	for (l = L; l >= 0; l--)
		if (k >= 1LL << l)
			cc_[l][i] += x, k -= 1LL << l, i = pp_[l][i];
}

int qu[N * 2 + 1], h1, t1, t2;

void dfs2(int p, int i, int cnt, int h_, int h0) {
	int o;

	time++;
	for (o = eo[i]; o--; ) {
		int j = ej[i][o];

		if (j != p) {
			int h0_ = tt[j] != -1 ? cnt : h0, d;

			qu[cnt] = j;
			for (d = cnt - h0; d <= cnt - h_; d++)
				upd(qu[cnt - 1 - (k + cnt - (cnt - d <= h1 ? t1 : t2) - 1) % d], -1);
			for (d = cnt - h0_ + 1; d <= cnt - h_ + 1; d++)
				upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], 1);
			dfs2(i, j, cnt + 1, h_, h0_);
			for (d = cnt - h0_ + 1; d <= cnt - h_ + 1; d++)
				upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], -1);
			for (d = cnt - h0; d <= cnt - h_; d++)
				upd(qu[cnt - 1 - (k + cnt - (cnt - d <= h1 ? t1 : t2) - 1) % d], 1);
		}
	}
}

int main() {
	int g, h, h_, i, i_, j, t, l, cnt, d, o;
	long long k_, a;

	o = a = 0;
	scanf("%d%lld", &n, &k), init(n, k - n * 3, k + n * 3);
	for (i = 0; i < n; i++)
		ej[i] = (int *) malloc(2 * sizeof *ej[i]);
	for (i = 0; i < n; i++) {
		scanf("%d", &pp[i]), pp[i]--;
		append(pp[i], i);
	}
	for (i = 0; i < n; i++)
		pp_[0][i] = pp[i];
	for (l = 1; l <= L; l++)
		for (i = 0; i < n; i++)
			pp_[l][i] = pp_[l - 1][pp_[l - 1][i]];
	memset(tt, -1, n * sizeof *tt), memset(tt_, -1, n * sizeof *tt_);
	for (i = 0, t = 0; tt[i] == -1; i = pp[i], t++)
		ii[tt[i] = t] = i, dfs1(i, t);
	ii[t] = i_ = i;
	for (i = 0; i < n; i++)
		if (tt_[i] == -1)
			tt_[i] = t;
	j = i_, k_ = (k - t) % (t - tt[i_]);
	while (k_--)
		j = pp[j];
	for (i = 0; i < n; i++)
		if (tt[i] == -1)
			cc[j] += n;
	for (i = 0; i < n; i++)
		update(i, k, 1), update(i, k - tt_[i], -1);
	for (l = L; l > 0; l--)
		for (i = 0; i < n; i++)
			cc_[l - 1][i] += cc_[l][i], cc_[l - 1][pp_[l - 1][i]] += cc_[l][i];
	for (i = 0; i < n; i++)
		cc[i] += cc_[0][i];
	cnt = 0;
	for (h = t - 1; h > tt[i_]; h--)
		qu[cnt++] = ii[h];
	qu[cnt] = i_;
	h1 = t - tt[i_] - 1, t1 = tt[qu[h1]] + h1, t2 = tt[qu[cnt]] + cnt, h_ = cnt - (t - tt[i_]) + 1;
	for (h = t; h > tt[i_]; h--) {
		qu[cnt] = ii[h];
		if (h == t)
			for (g = cnt; g >= 0; g--)
				upd(qu[cnt - (k + cnt - (g <= h1 ? t1 : t2)) % (cnt - g + 1)], 1);
		else if (h == t - 1) {
			for (d = 1; d <= cnt - h_; d++)
				upd(qu[cnt - 1 - (k + cnt - (cnt - d <= h1 ? t1 : t2) - 1) % d], -1);
			t2 = tt[qu[cnt]] + cnt, h_++;
			for (d = 1, g = cnt; d <= cnt - h_ + 1; d++, g--)
				upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], 1);
		} else {
			h_++;
			d = cnt - h1;
			upd(qu[cnt - 1 - (k + cnt - t1 - 1) % d], -1), upd(qu[cnt - (k + cnt - t2) % d], 1);
			a = (k + cnt - t1) - (k - n * 3);
			for (o = eo_[a]; o--; ) {
				d = ed[a][o];
				if (d <= cnt - h_ + 1 && d > cnt - h1)
					upd(qu[cnt - d], -1), upd(qu[cnt], 1);
			}
			a = (k + cnt - t2) - (k - n * 3);
			for (o = eo_[a]; o--; ) {
				d = ed[a][o];
				if (d <= cnt - h_ + 1 && d < cnt - h1)
					upd(qu[cnt - d], -1), upd(qu[cnt], 1);
			}
		}
		dfs2(ii[h - 1], ii[h], cnt + 1, cnt - (t - tt[i_]) + 1, cnt);
		cnt++;
	}
	for (i = 0; i < n; i++)
		upd(i, -bb[i]);
	for (i = 0; i < n; i++)
		printf("%lld\n", cc[i]);
	return 0;
}

Compilation message

space_pirate.c: In function 'append':
space_pirate.c:44:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   44 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
space_pirate.c: In function 'main':
space_pirate.c:101:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |  scanf("%d%lld", &n, &k), init(n, k - n * 3, k + n * 3);
      |  ^~~~~~~~~~~~~~~~~~~~~~~
space_pirate.c:105:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |   scanf("%d", &pp[i]), pp[i]--;
      |   ^~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct

Subtask #2
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 11 ms 4436 KB Output is correct
16 Correct 6 ms 4436 KB Output is correct
17 Correct 18 ms 4308 KB Output is correct
18 Correct 49 ms 4596 KB Output is correct
19 Correct 11 ms 4436 KB Output is correct
20 Correct 125 ms 4632 KB Output is correct
21 Correct 236 ms 4792 KB Output is correct
22 Correct 80 ms 4544 KB Output is correct
23 Correct 233 ms 4812 KB Output is correct
24 Correct 57 ms 4628 KB Output is correct
25 Correct 6 ms 4308 KB Output is correct
26 Correct 40 ms 4596 KB Output is correct
27 Correct 88 ms 4552 KB Output is correct
28 Correct 111 ms 4480 KB Output is correct

Subtask #3
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 581 ms 123600 KB Output is correct
2 Correct 478 ms 131164 KB Output is correct
3 Correct 553 ms 127316 KB Output is correct
4 Correct 508 ms 123640 KB Output is correct
5 Correct 558 ms 131220 KB Output is correct
6 Correct 519 ms 127180 KB Output is correct

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 11 ms 4436 KB Output is correct
16 Correct 6 ms 4436 KB Output is correct
17 Correct 18 ms 4308 KB Output is correct
18 Correct 49 ms 4596 KB Output is correct
19 Correct 11 ms 4436 KB Output is correct
20 Correct 125 ms 4632 KB Output is correct
21 Correct 236 ms 4792 KB Output is correct
22 Correct 80 ms 4544 KB Output is correct
23 Correct 233 ms 4812 KB Output is correct
24 Correct 57 ms 4628 KB Output is correct
25 Correct 6 ms 4308 KB Output is correct
26 Correct 40 ms 4596 KB Output is correct
27 Correct 88 ms 4552 KB Output is correct
28 Correct 111 ms 4480 KB Output is correct
29 Correct 581 ms 123600 KB Output is correct
30 Correct 478 ms 131164 KB Output is correct
31 Correct 553 ms 127316 KB Output is correct
32 Correct 508 ms 123640 KB Output is correct
33 Correct 558 ms 131220 KB Output is correct
34 Correct 519 ms 127180 KB Output is correct
35 Correct 1150 ms 123492 KB Output is correct
36 Correct 865 ms 123572 KB Output is correct
37 Correct 287 ms 123984 KB Output is correct
38 Execution timed out 2074 ms 129428 KB Time limit exceeded
39 Halted 0 ms 0 KB -