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답안 #545869

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
545869 2022-04-05T15:38:52 Z rainboy 우주 해적 (JOI14_space_pirate) C
100 / 100
 1469 ms 140040 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, o_;

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

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

			qu[cnt] = j;
			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 - h0 && d <= cnt - h_ && 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 - h0 && d <= cnt - h_ && d < cnt - h1)
					upd(qu[cnt - d], -1), upd(qu[cnt], 1);
			}
			if (tt[j] == -1) {
				d = cnt - h0;
				upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], -1);
			}
			d = cnt - h_ + 1;
			upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], 1);
			dfs2(i, j, cnt + 1, h_, h0_);
			d = cnt - h_ + 1;
			upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], -1);
			if (tt[j] == -1) {
				d = cnt - h0;
				upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], 1);
			}
			d = cnt - h1;
			upd(qu[cnt - (k + cnt - t2) % d], -1), upd(qu[cnt - 1 - (k + cnt - t1 - 1) % d], 1);
			a = (k + cnt - t1) - (k - n * 3);
			for (o_ = eo_[a]; o_--; ) {
				d = ed[a][o_];
				if (d >= cnt - h0 && d <= cnt - h_ && d > cnt - h1)
					upd(qu[cnt], -1), upd(qu[cnt - d], 1);
			}
			a = (k + cnt - t2) - (k - n * 3);
			for (o_ = eo_[a]; o_--; ) {
				d = ed[a][o_];
				if (d >= cnt - h0 && d <= cnt - h_ && d < cnt - h1)
					upd(qu[cnt], -1), upd(qu[cnt - d], 1);
			}
		}
	}
}

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

	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:132:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  132 |  scanf("%d%lld", &n, &k), init(n, k - n * 3, k + n * 3);
      |  ^~~~~~~~~~~~~~~~~~~~~~~
space_pirate.c:136:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  136 |   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 1060 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 1 ms 1060 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 1064 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 1064 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 1060 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 1 ms 1060 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 1064 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 1064 KB Output is correct
15 Correct 6 ms 4404 KB Output is correct
16 Correct 6 ms 4400 KB Output is correct
17 Correct 8 ms 4440 KB Output is correct
18 Correct 8 ms 4564 KB Output is correct
19 Correct 7 ms 4436 KB Output is correct
20 Correct 7 ms 4692 KB Output is correct
21 Correct 9 ms 4780 KB Output is correct
22 Correct 7 ms 4656 KB Output is correct
23 Correct 7 ms 4916 KB Output is correct
24 Correct 6 ms 4692 KB Output is correct
25 Correct 6 ms 4440 KB Output is correct
26 Correct 7 ms 4564 KB Output is correct
27 Correct 11 ms 4552 KB Output is correct
28 Correct 9 ms 4404 KB Output is correct

Subtask #3
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 621 ms 123812 KB Output is correct
2 Correct 549 ms 131204 KB Output is correct
3 Correct 600 ms 127280 KB Output is correct
4 Correct 537 ms 123664 KB Output is correct
5 Correct 610 ms 131256 KB Output is correct
6 Correct 559 ms 127184 KB Output is correct

Subtask #4
20.0 / 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 1060 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 1 ms 1060 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 1064 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 1064 KB Output is correct
15 Correct 6 ms 4404 KB Output is correct
16 Correct 6 ms 4400 KB Output is correct
17 Correct 8 ms 4440 KB Output is correct
18 Correct 8 ms 4564 KB Output is correct
19 Correct 7 ms 4436 KB Output is correct
20 Correct 7 ms 4692 KB Output is correct
21 Correct 9 ms 4780 KB Output is correct
22 Correct 7 ms 4656 KB Output is correct
23 Correct 7 ms 4916 KB Output is correct
24 Correct 6 ms 4692 KB Output is correct
25 Correct 6 ms 4440 KB Output is correct
26 Correct 7 ms 4564 KB Output is correct
27 Correct 11 ms 4552 KB Output is correct
28 Correct 9 ms 4404 KB Output is correct
29 Correct 621 ms 123812 KB Output is correct
30 Correct 549 ms 131204 KB Output is correct
31 Correct 600 ms 127280 KB Output is correct
32 Correct 537 ms 123664 KB Output is correct
33 Correct 610 ms 131256 KB Output is correct
34 Correct 559 ms 127184 KB Output is correct
35 Correct 433 ms 123592 KB Output is correct
36 Correct 337 ms 123436 KB Output is correct
37 Correct 337 ms 123980 KB Output is correct
38 Correct 643 ms 130112 KB Output is correct
39 Correct 601 ms 127388 KB Output is correct
40 Correct 638 ms 133164 KB Output is correct
41 Correct 603 ms 130776 KB Output is correct
42 Correct 647 ms 132336 KB Output is correct
43 Correct 353 ms 140040 KB Output is correct
44 Correct 363 ms 132532 KB Output is correct
45 Correct 351 ms 123580 KB Output is correct
46 Correct 577 ms 130528 KB Output is correct
47 Correct 1469 ms 129268 KB Output is correct
48 Correct 949 ms 126356 KB Output is correct