oj.uz

Submission #905150

# Submission time Handle Problem Language Result Execution time Memory
905150 2024-01-12T16:24:58 Z rainboy Brackets (CPSPC17_brackets) C
100 / 100
 34 ms 1120 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define N	200
#define INF	0x3f3f3f3f3f3f3f3fLL

void append(int **ej, int **ec, int *eo, int i, int j, int c) {
	int o = eo[i]++;

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

long long dd[N * N]; int iq[N * N + 1], pq[N * N], 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 *ej[N], *ec[N], eo[N], *fi[N], *fc[N], fo[N];
	int n, m, s, t, h, i, i_, j, j_, k, u, v, w, o1, o2, c1, c2;
	long long d;

	scanf("%d%d%d%d", &n, &m, &s, &t), s--, t--;
	for (i = 0; i < n; i++) {
		ej[i] = (int *) malloc(2 * sizeof *ej[i]);
		ec[i] = (int *) malloc(2 * sizeof *ec[i]);
		fi[i] = (int *) malloc(2 * sizeof *fi[i]);
		fc[i] = (int *) malloc(2 * sizeof *fc[i]);
	}
	for (h = 0; h < m; h++) {
		static char s[2];
		int c, d;

		scanf("%d%d%s", &i, &j, s), i--, j--;
		switch (s[0]) {
			case '(':
				c = 0, d = 1;
				break;
			case ')':
				c = 0, d = 2;
				break;
			case '[':
				c = 1, d = 1;
				break;
			case ']':
				c = 1, d = 2;
				break;
			case '{':
				c = 2, d = 1;
				break;
			case '}':
				c = 2, d = 2;
				break;
			case '<':
				c = 3, d = 1;
				break;
			case '>':
				c = 3, d = 2;
				break;
			default:
				c = -1, d = 0;
				break;
		}
		if (d == 1)
			append(fi, fc, fo, j, i, c);
		else
			append(ej, ec, eo, i, j, c);
	}
	memset(dd, 0x3f, n * n * sizeof *dd);
	for (i = 0; i < n; i++) {
		u = i * n + i;
		dd[u] = 0, pq_add_last(u);
	}
	while (cnt) {
		u = pq_remove_first(), i = u / n, j = u % n;
		if (i == s && j == t) {
			printf("%lld\n", dd[u]);
			return 0;
		}
		for (o1 = fo[i]; o1--; ) {
			i_ = fi[i][o1], c1 = fc[i][o1];
			for (o2 = eo[j]; o2--; ) {
				j_ = ej[j][o2], c2 = ec[j][o2];
				if (c1 == c2) {
					w = i_ * n + j_, d = dd[u] + 2;
					if (dd[w] > d) {
						if (dd[w] == INF)
							pq_add_last(w);
						dd[w] = d, pq_up(w);
					}
				}
			}
		}
		for (k = 0; k < n; k++) {
			v = j * n + k, w = i * n + k, d = dd[u] + dd[v];
			if (dd[w] > d) {
				if (dd[w] == INF)
					pq_add_last(w);
				dd[w] = d, pq_up(w);
			}
			v = k * n + i, w = k * n + j, d = dd[v] + dd[u];
			if (dd[w] > d) {
				if (dd[w] == INF)
					pq_add_last(w);
				dd[w] = d, pq_up(w);
			}
		}
	}
	printf("-1\n");
	return 0;
}

Compilation message

Main.c: In function 'append':
Main.c:11:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   11 |  if (o >= 2 && (o & o - 1) == 0) {
      |                     ~~^~~
Main.c: In function 'main':
Main.c:60:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |  scanf("%d%d%d%d", &n, &m, &s, &t), s--, t--;
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:71:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |   scanf("%d%d%s", &i, &j, s), i--, j--;
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 420 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 360 KB Output is correct
6 Correct 0 ms 424 KB Output is correct
7 Correct 1 ms 424 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 420 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 360 KB Output is correct
6 Correct 0 ms 424 KB Output is correct
7 Correct 1 ms 424 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 424 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 436 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 420 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 360 KB Output is correct
6 Correct 0 ms 424 KB Output is correct
7 Correct 1 ms 424 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 424 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 436 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 4 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 3 ms 348 KB Output is correct
36 Correct 2 ms 348 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 420 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 360 KB Output is correct
6 Correct 0 ms 424 KB Output is correct
7 Correct 1 ms 424 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 424 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 436 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 4 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 3 ms 348 KB Output is correct
36 Correct 2 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 6 ms 412 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 7 ms 604 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 6 ms 604 KB Output is correct
46 Correct 9 ms 604 KB Output is correct
47 Correct 1 ms 548 KB Output is correct
48 Correct 10 ms 604 KB Output is correct
49 Correct 0 ms 348 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 860 KB Output is correct
2 Correct 15 ms 860 KB Output is correct
3 Correct 17 ms 860 KB Output is correct
4 Correct 16 ms 860 KB Output is correct
5 Correct 15 ms 860 KB Output is correct
6 Correct 14 ms 860 KB Output is correct
7 Correct 14 ms 860 KB Output is correct
8 Correct 15 ms 860 KB Output is correct
9 Correct 15 ms 860 KB Output is correct
10 Correct 14 ms 860 KB Output is correct
11 Correct 19 ms 860 KB Output is correct
12 Correct 19 ms 1012 KB Output is correct
13 Correct 13 ms 860 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 4 ms 860 KB Output is correct
16 Correct 1 ms 860 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 420 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 360 KB Output is correct
6 Correct 0 ms 424 KB Output is correct
7 Correct 1 ms 424 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 424 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 436 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 4 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 3 ms 348 KB Output is correct
36 Correct 2 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 6 ms 412 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 7 ms 604 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 6 ms 604 KB Output is correct
46 Correct 9 ms 604 KB Output is correct
47 Correct 1 ms 548 KB Output is correct
48 Correct 10 ms 604 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 15 ms 860 KB Output is correct
51 Correct 15 ms 860 KB Output is correct
52 Correct 17 ms 860 KB Output is correct
53 Correct 16 ms 860 KB Output is correct
54 Correct 15 ms 860 KB Output is correct
55 Correct 14 ms 860 KB Output is correct
56 Correct 14 ms 860 KB Output is correct
57 Correct 15 ms 860 KB Output is correct
58 Correct 15 ms 860 KB Output is correct
59 Correct 14 ms 860 KB Output is correct
60 Correct 19 ms 860 KB Output is correct
61 Correct 19 ms 1012 KB Output is correct
62 Correct 13 ms 860 KB Output is correct
63 Correct 1 ms 860 KB Output is correct
64 Correct 4 ms 860 KB Output is correct
65 Correct 1 ms 860 KB Output is correct
66 Correct 1 ms 860 KB Output is correct
67 Correct 32 ms 860 KB Output is correct
68 Correct 33 ms 1004 KB Output is correct
69 Correct 32 ms 860 KB Output is correct
70 Correct 3 ms 860 KB Output is correct
71 Correct 3 ms 860 KB Output is correct
72 Correct 13 ms 1120 KB Output is correct
73 Correct 29 ms 864 KB Output is correct
74 Correct 6 ms 864 KB Output is correct
75 Correct 31 ms 1108 KB Output is correct
76 Correct 2 ms 860 KB Output is correct
77 Correct 1 ms 704 KB Output is correct
78 Correct 5 ms 944 KB Output is correct
79 Correct 31 ms 868 KB Output is correct
80 Correct 34 ms 1120 KB Output is correct
81 Correct 5 ms 868 KB Output is correct
82 Correct 3 ms 356 KB Output is correct
83 Correct 22 ms 872 KB Output is correct