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답안 #545845

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
545845 2022-04-05T15:09:02 Z rainboy 우주 해적 (JOI14_space_pirate) C
47 / 100
 2000 ms 85204 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], 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 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, h;

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

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

	scanf("%d%lld", &n, &k);
	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_++;
			for (d = 1; d <= cnt - h_ + 1; d++)
				if (cnt - d == h1 || (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d == 0) {
					upd(qu[cnt - 1 - (k + cnt - (cnt - d <= h1 ? t1 : t2) - 1) % d], -1);
					upd(qu[cnt - (k + cnt - (cnt - d + 1 <= h1 ? t1 : t2)) % d], 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:17:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   17 |  if (o >= 2 && (o & o - 1) == 0)
      |                     ~~^~~
space_pirate.c: In function 'main':
space_pirate.c:73:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |  scanf("%d%lld", &n, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~~~
space_pirate.c:77:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |   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 1024 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 928 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 1024 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 928 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 3284 KB Output is correct
16 Correct 6 ms 3284 KB Output is correct
17 Correct 18 ms 3376 KB Output is correct
18 Correct 147 ms 3472 KB Output is correct
19 Correct 37 ms 3364 KB Output is correct
20 Correct 146 ms 3460 KB Output is correct
21 Correct 249 ms 3600 KB Output is correct
22 Correct 83 ms 3404 KB Output is correct
23 Correct 231 ms 3636 KB Output is correct
24 Correct 57 ms 3440 KB Output is correct
25 Correct 4 ms 3284 KB Output is correct
26 Correct 148 ms 3588 KB Output is correct
27 Correct 92 ms 3376 KB Output is correct
28 Correct 126 ms 3336 KB Output is correct

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 456 ms 78628 KB Output is correct
2 Execution timed out 2087 ms 85204 KB Time limit exceeded
3 Halted 0 ms 0 KB -

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 1024 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 928 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 3284 KB Output is correct
16 Correct 6 ms 3284 KB Output is correct
17 Correct 18 ms 3376 KB Output is correct
18 Correct 147 ms 3472 KB Output is correct
19 Correct 37 ms 3364 KB Output is correct
20 Correct 146 ms 3460 KB Output is correct
21 Correct 249 ms 3600 KB Output is correct
22 Correct 83 ms 3404 KB Output is correct
23 Correct 231 ms 3636 KB Output is correct
24 Correct 57 ms 3440 KB Output is correct
25 Correct 4 ms 3284 KB Output is correct
26 Correct 148 ms 3588 KB Output is correct
27 Correct 92 ms 3376 KB Output is correct
28 Correct 126 ms 3336 KB Output is correct
29 Correct 456 ms 78628 KB Output is correct
30 Execution timed out 2087 ms 85204 KB Time limit exceeded
31 Halted 0 ms 0 KB -