oj.uz

Submission #670868

# Submission time Handle Problem Language Result Execution time Memory
670868 2022-12-10T22:55:59 Z rainboy Treatment Project (JOI20_treatment) C
100 / 100
 779 ms 203592 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define N	100000
#define LN	18	/* LN = ceil(log2(N * 2 + 1)) */
#define N_	(1 << LN)
#define N1	(N * 2 + N * 2 * (LN + 1))
#define INF	0x7fffffff
#define LINF	0x3f3f3f3f3f3f3f3fLL

unsigned int X = 12345;

int rand_() {
	return (X *= 3) >> 1;
}

int tt[N], ll[N], rr[N], cc[N], xx[N * 2], yy[N * 2];

int *zz;

void sort(int *ii, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, i_ = ii[l + rand_() % (r - l)], tmp;

		while (j < k) {
			int c = zz[ii[j]] != zz[i_] ? (zz[ii[j]] < zz[i_] ? -1 : 1) : (ii[j] & 1) - (i_ & 1);

			if (c == 0)
				j++;
			else if (c < 0) {
				tmp = ii[i], ii[i] = ii[j], ii[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = ii[j], ii[j] = ii[k], ii[k] = tmp;
			}
		}
		sort(ii, l, i);
		l = k;
	}
}

int *ej[N1], *ew[N1], eo[N1], n1;

int newnode() {
	int i = n1++;

	ej[i] = (int *) malloc(2 * sizeof *ej[i]);
	ew[i] = (int *) malloc(2 * sizeof *ew[i]);
	return i;
}

void append(int i, int j, int w) {
	int o = eo[i]++;

	if (o >= 2 && (o & o - 1) == 0) {
		ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
		ew[i] = (int *) realloc(ew[i], o * 2 * sizeof *ew[i]);
	}
	ej[i][o] = j, ew[i][o] = w;
}

int st[N_ * 2], n_;

void pul(int i) {
	int l = i << 1, r = l | 1;

	st[i] = newnode();
	if (st[l] != -1)
		append(st[i], st[l], 0);
	if (st[r] != -1)
		append(st[i], st[r], 0);
}

void update(int i, int u) {
	i += n_;
	st[i] = u << 1 | 0;
	while (i > 1)
		pul(i >>= 1);
}

void add_edges(int r, int i) {
	int l = 0;

	for (l += n_, r += n_; l <= r; l >>= 1, r >>= 1)
		if ((r & 1) == 0) {
			if (st[r] != -1)
				append(i << 1 | 1, st[r], 0);
			r--;
		}
}

long long dd[N1]; int iq[N1 + 1], pq[N1], cnt;

int lt(int i, int j) { return dd[i] < dd[j]; }

int p2(int p) {
	return (p *= 2) > cnt ? 0 : (p < cnt && lt(iq[p + 1], iq[p]) ? p + 1 : p);
}

void pq_up(int i) {
	int p, q, j;

	for (p = pq[i]; (q = p / 2) && lt(i, j = iq[q]); p = q)
		iq[pq[j] = p] = j;
	iq[pq[i] = p] = i;
}

void pq_dn(int i) {
	int p, q, j;

	for (p = pq[i]; (q = p2(p)) && lt(j = iq[q], i); p = q)
		iq[pq[j] = p] = j;
	iq[pq[i] = p] = i;
}

void pq_add_last(int i) {
	iq[pq[i] = ++cnt] = i;
}

int pq_remove_first() {
	int i = iq[1], j = iq[cnt--];

	if (j != i)
		pq[j] = 1, pq_dn(j);
	pq[i] = 0;
	return i;
}

int main() {
	static int ii[N * 2];
	int n, x_, h, i, o;

	scanf("%d%d", &x_, &n);
	for (i = 0; i < n; i++) {
		scanf("%d%d%d%d", &tt[i], &ll[i], &rr[i], &cc[i]), ll[i]--;
		if (ll[i] == 0)
			xx[i << 1 | 0] = -INF, yy[i << 1 | 0] = -INF;
		else
			xx[i << 1 | 0] = ll[i] - tt[i], yy[i << 1 | 0] = ll[i] + tt[i];
		if (rr[i] == x_)
			xx[i << 1 | 1] = INF, yy[i << 1 | 1] = INF;
		else
			xx[i << 1 | 1] = rr[i] - tt[i], yy[i << 1 | 1] = rr[i] + tt[i];
	}
	for (i = 0; i < n; i++) {
		newnode(), newnode();
		append(i << 1 | 0, i << 1 | 1, cc[i]);
	}
	for (i = 0; i < n * 2; i++)
		ii[i] = i;
	zz = xx, sort(ii, 0, n * 2);
	for (i = 0; i < n * 2; i++)
		xx[ii[i]] = i;
	zz = yy, sort(ii, 0, n * 2);
	n_ = 1;
	while (n_ < n * 2 + 1)
		n_ <<= 1;
	memset(st, -1, n_ * 2 * sizeof *st);
	for (h = 0; h < n * 2; h++) {
		i = ii[h];
		if ((i & 1) == 0)
			update(xx[i], i >> 1);
		else
			add_edges(xx[i], i >> 1);
	}
	cnt = 0;
	memset(dd, 0x3f, n1 * sizeof *dd);
	for (i = 0; i < n; i++)
		if (ll[i] == 0)
			dd[i << 1 | 0] = 0, pq_add_last(i << 1 | 0);
	while (cnt) {
		i = pq_remove_first();
		if (i < n * 2 && (i & 1) != 0 && rr[i >> 1] == x_) {
			printf("%lld\n", dd[i]);
			return 0;
		}
		for (o = eo[i]; o--; ) {
			int j = ej[i][o];
			long long w = ew[i][o], d = dd[i] + w;

			if (dd[j] > d) {
				if (dd[j] == LINF)
					pq_add_last(j);
				dd[j] = d, pq_up(j);
			}
		}
	}
	printf("-1\n");
	return 0;
}

Compilation message

treatment.c: In function 'append':
treatment.c:57:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   57 |  if (o >= 2 && (o & o - 1) == 0) {
      |                     ~~^~~
treatment.c: In function 'main':
treatment.c:135:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  135 |  scanf("%d%d", &x_, &n);
      |  ^~~~~~~~~~~~~~~~~~~~~~
treatment.c:137:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  137 |   scanf("%d%d%d%d", &tt[i], &ll[i], &rr[i], &cc[i]), ll[i]--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 328 ms 199848 KB Output is correct
2 Correct 307 ms 198804 KB Output is correct
3 Correct 371 ms 199392 KB Output is correct
4 Correct 352 ms 199260 KB Output is correct
5 Correct 291 ms 199144 KB Output is correct
6 Correct 297 ms 200240 KB Output is correct
7 Correct 277 ms 201676 KB Output is correct
8 Correct 206 ms 191968 KB Output is correct
9 Correct 220 ms 192908 KB Output is correct
10 Correct 220 ms 194248 KB Output is correct
11 Correct 316 ms 198920 KB Output is correct
12 Correct 332 ms 200140 KB Output is correct
13 Correct 374 ms 202884 KB Output is correct
14 Correct 374 ms 202892 KB Output is correct
15 Correct 366 ms 202572 KB Output is correct
16 Correct 384 ms 202680 KB Output is correct
17 Correct 352 ms 201836 KB Output is correct
18 Correct 303 ms 197516 KB Output is correct

Subtask #2
5.0 / 5.0

# 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 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 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 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct

Subtask #3
30.0 / 30.0

# 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 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 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 0 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 16 ms 8248 KB Output is correct
21 Correct 16 ms 8208 KB Output is correct
22 Correct 15 ms 8276 KB Output is correct
23 Correct 13 ms 8276 KB Output is correct
24 Correct 15 ms 8212 KB Output is correct
25 Correct 20 ms 8352 KB Output is correct
26 Correct 16 ms 8320 KB Output is correct
27 Correct 11 ms 8352 KB Output is correct
28 Correct 16 ms 8304 KB Output is correct
29 Correct 16 ms 8264 KB Output is correct
30 Correct 10 ms 8032 KB Output is correct
31 Correct 10 ms 7932 KB Output is correct
32 Correct 13 ms 8276 KB Output is correct
33 Correct 14 ms 8140 KB Output is correct
34 Correct 15 ms 8276 KB Output is correct
35 Correct 11 ms 8148 KB Output is correct
36 Correct 12 ms 8276 KB Output is correct
37 Correct 13 ms 8276 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 328 ms 199848 KB Output is correct
2 Correct 307 ms 198804 KB Output is correct
3 Correct 371 ms 199392 KB Output is correct
4 Correct 352 ms 199260 KB Output is correct
5 Correct 291 ms 199144 KB Output is correct
6 Correct 297 ms 200240 KB Output is correct
7 Correct 277 ms 201676 KB Output is correct
8 Correct 206 ms 191968 KB Output is correct
9 Correct 220 ms 192908 KB Output is correct
10 Correct 220 ms 194248 KB Output is correct
11 Correct 316 ms 198920 KB Output is correct
12 Correct 332 ms 200140 KB Output is correct
13 Correct 374 ms 202884 KB Output is correct
14 Correct 374 ms 202892 KB Output is correct
15 Correct 366 ms 202572 KB Output is correct
16 Correct 384 ms 202680 KB Output is correct
17 Correct 352 ms 201836 KB Output is correct
18 Correct 303 ms 197516 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 0 ms 340 KB Output is correct
28 Correct 0 ms 340 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 0 ms 340 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 0 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Correct 16 ms 8248 KB Output is correct
39 Correct 16 ms 8208 KB Output is correct
40 Correct 15 ms 8276 KB Output is correct
41 Correct 13 ms 8276 KB Output is correct
42 Correct 15 ms 8212 KB Output is correct
43 Correct 20 ms 8352 KB Output is correct
44 Correct 16 ms 8320 KB Output is correct
45 Correct 11 ms 8352 KB Output is correct
46 Correct 16 ms 8304 KB Output is correct
47 Correct 16 ms 8264 KB Output is correct
48 Correct 10 ms 8032 KB Output is correct
49 Correct 10 ms 7932 KB Output is correct
50 Correct 13 ms 8276 KB Output is correct
51 Correct 14 ms 8140 KB Output is correct
52 Correct 15 ms 8276 KB Output is correct
53 Correct 11 ms 8148 KB Output is correct
54 Correct 12 ms 8276 KB Output is correct
55 Correct 13 ms 8276 KB Output is correct
56 Correct 485 ms 199272 KB Output is correct
57 Correct 445 ms 200244 KB Output is correct
58 Correct 508 ms 200396 KB Output is correct
59 Correct 490 ms 200604 KB Output is correct
60 Correct 396 ms 199764 KB Output is correct
61 Correct 524 ms 200232 KB Output is correct
62 Correct 488 ms 199144 KB Output is correct
63 Correct 322 ms 197276 KB Output is correct
64 Correct 309 ms 197344 KB Output is correct
65 Correct 325 ms 203288 KB Output is correct
66 Correct 356 ms 199756 KB Output is correct
67 Correct 779 ms 203128 KB Output is correct
68 Correct 579 ms 203164 KB Output is correct
69 Correct 477 ms 203488 KB Output is correct
70 Correct 743 ms 203052 KB Output is correct
71 Correct 612 ms 203036 KB Output is correct
72 Correct 438 ms 203184 KB Output is correct
73 Correct 696 ms 202724 KB Output is correct
74 Correct 271 ms 195280 KB Output is correct
75 Correct 247 ms 195008 KB Output is correct
76 Correct 337 ms 200016 KB Output is correct
77 Correct 347 ms 200364 KB Output is correct
78 Correct 425 ms 202920 KB Output is correct
79 Correct 742 ms 202644 KB Output is correct
80 Correct 430 ms 202592 KB Output is correct
81 Correct 303 ms 195092 KB Output is correct
82 Correct 426 ms 201784 KB Output is correct
83 Correct 525 ms 201768 KB Output is correct
84 Correct 640 ms 201936 KB Output is correct
85 Correct 389 ms 202856 KB Output is correct
86 Correct 442 ms 200780 KB Output is correct
87 Correct 412 ms 200872 KB Output is correct
88 Correct 381 ms 202928 KB Output is correct
89 Correct 429 ms 202572 KB Output is correct
90 Correct 426 ms 202924 KB Output is correct
91 Correct 298 ms 195020 KB Output is correct
92 Correct 518 ms 200708 KB Output is correct
93 Correct 629 ms 202200 KB Output is correct
94 Correct 460 ms 201596 KB Output is correct
95 Correct 510 ms 200812 KB Output is correct
96 Correct 355 ms 202268 KB Output is correct
97 Correct 458 ms 203356 KB Output is correct
98 Correct 470 ms 203444 KB Output is correct
99 Correct 428 ms 202052 KB Output is correct
100 Correct 360 ms 199452 KB Output is correct
101 Correct 627 ms 203592 KB Output is correct
102 Correct 405 ms 201744 KB Output is correct
103 Correct 486 ms 198796 KB Output is correct