oj.uz

Submission #545844

# Submission time Handle Problem Language Result Execution time Memory
545844 2022-04-05T15:06:18 Z rainboy Space Pirate (JOI14_space_pirate) C
47 / 100
 2000 ms 85192 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) {
			t2 = tt[qu[cnt]] + cnt, h_++;
			for (d = 1; d <= cnt - h_ + 1; d++) {
				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);
			}
		} else {
			h_++;
			for (d = 1; d <= cnt - h_ + 1; d++) {
				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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 3284 KB Output is correct
16 Correct 5 ms 3284 KB Output is correct
17 Correct 17 ms 3284 KB Output is correct
18 Correct 232 ms 3580 KB Output is correct
19 Correct 65 ms 3284 KB Output is correct
20 Correct 183 ms 3412 KB Output is correct
21 Correct 240 ms 3676 KB Output is correct
22 Correct 81 ms 3448 KB Output is correct
23 Correct 229 ms 3596 KB Output is correct
24 Correct 57 ms 3440 KB Output is correct
25 Correct 4 ms 3284 KB Output is correct
26 Correct 237 ms 3556 KB Output is correct
27 Correct 88 ms 3380 KB Output is correct
28 Correct 127 ms 3336 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 436 ms 78576 KB Output is correct
2 Execution timed out 2088 ms 85192 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory 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 3284 KB Output is correct
16 Correct 5 ms 3284 KB Output is correct
17 Correct 17 ms 3284 KB Output is correct
18 Correct 232 ms 3580 KB Output is correct
19 Correct 65 ms 3284 KB Output is correct
20 Correct 183 ms 3412 KB Output is correct
21 Correct 240 ms 3676 KB Output is correct
22 Correct 81 ms 3448 KB Output is correct
23 Correct 229 ms 3596 KB Output is correct
24 Correct 57 ms 3440 KB Output is correct
25 Correct 4 ms 3284 KB Output is correct
26 Correct 237 ms 3556 KB Output is correct
27 Correct 88 ms 3380 KB Output is correct
28 Correct 127 ms 3336 KB Output is correct
29 Correct 436 ms 78576 KB Output is correct
30 Execution timed out 2088 ms 85192 KB Time limit exceeded
31 Halted 0 ms 0 KB -