oj.uz

Submission #388028

# Submission time Handle Problem Language Result Execution time Memory
388028 2021-04-09T18:50:59 Z rainboy Dreaming (IOI13_dreaming) C
47 / 100
 95 ms 20972 KB 
#include "dreaming.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define N	100000
#define INF	0x3f3f3f3f

int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }

int *ej[N], *ew[N], eo[N];

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;
}

char rr[N]; int dp[N], ans;

void dfs1(int p, int i, int r) {
	int o, d1, d2;

	if (rr[i] != -1)
		return;
	rr[i] = r, d1 = 0, d2 = 0;
	for (o = eo[i]; o--; ) {
		int j = ej[i][o], w = ew[i][o];

		if (j != p) {
			dfs1(i, j, r);
			if (d1 < dp[j] + w)
				d2 = d1, d1 = dp[j] + w;
			else if (d2 < dp[j] + w)
				d2 = dp[j] + w;
		}
	}
	ans = max(ans, d1 + d2);
	dp[i] = d1;
}

int r;

void dfs2(int p, int i, int d) {
	int o, d1, d2, j1;

	r = min(r, max(dp[i], d));
	d1 = 0, d2 = 0, j1 = -1;
	for (o = eo[i]; o--; ) {
		int j = ej[i][o], w = ew[i][o];

		if (j != p) {
			if (d1 < dp[j] + w)
				d2 = d1, d1 = dp[j] + w, j1 = j;
			else if (d2 < dp[j] + w)
				d2 = dp[j] + w;
		}
	}
	for (o = eo[i]; o--; ) {
		int j = ej[i][o], w = ew[i][o];

		if (j != p)
			dfs2(i, j, max(d, j == j1 ? d2 : d1) + w);
	}
}

int travelTime(int n, int m, int l, int ii[], int jj[], int ww[]) {
	int h, i, r1, r2;

	for (i = 0; i < n; i++) {
		ej[i] = (int *) malloc(2 * sizeof *ej[i]);
		ew[i] = (int *) malloc(2 * sizeof *ew[i]);
	}
	for (h = 0; h < m; h++)
		append(ii[h], jj[h], ww[h]), append(jj[h], ii[h], ww[h]);
	if (m < n - 2)
		return -1;
	memset(rr, -1, n * sizeof *rr);
	ans = 0;
	r = INF, dfs1(-1, 0, 0), dfs2(-1, 0, 0), r1 = r;
	if (m == n - 1)
		return ans;
	r2 = 0;
	for (i = 0; i < n; i++)
		if (rr[i] == -1) {
			r = INF, dfs1(-1, i, i), dfs2(-1, i, 0), r2 = r;
			break;
		}
	ans = max(ans, r1 + l + r2);
	return ans;
}

Compilation message

dreaming.c: In function 'append':
dreaming.c:17:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   17 |  if (o >= 2 && (o & o - 1) == 0) {
      |                     ~~^~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 15172 KB Output is correct
2 Correct 66 ms 14824 KB Output is correct
3 Correct 40 ms 11964 KB Output is correct
4 Correct 8 ms 2508 KB Output is correct
5 Correct 6 ms 1684 KB Output is correct
6 Correct 11 ms 3660 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 22 ms 6528 KB Output is correct
9 Correct 33 ms 9500 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 47 ms 11456 KB Output is correct
12 Correct 57 ms 13252 KB Output is correct
13 Correct 1 ms 432 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 296 KB Output is correct
15 Correct 0 ms 296 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 15172 KB Output is correct
2 Correct 66 ms 14824 KB Output is correct
3 Correct 40 ms 11964 KB Output is correct
4 Correct 8 ms 2508 KB Output is correct
5 Correct 6 ms 1684 KB Output is correct
6 Correct 11 ms 3660 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 22 ms 6528 KB Output is correct
9 Correct 33 ms 9500 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 47 ms 11456 KB Output is correct
12 Correct 57 ms 13252 KB Output is correct
13 Correct 1 ms 432 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 0 ms 296 KB Output is correct
28 Correct 0 ms 296 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 332 KB Output is correct
36 Correct 0 ms 332 KB Output is correct
37 Correct 0 ms 332 KB Output is correct
38 Correct 0 ms 332 KB Output is correct
39 Correct 72 ms 15160 KB Output is correct
40 Correct 69 ms 14824 KB Output is correct
41 Correct 41 ms 11964 KB Output is correct
42 Correct 7 ms 2380 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 0 ms 332 KB Output is correct
45 Correct 0 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 336 KB Output is correct
52 Correct 0 ms 288 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 0 ms 332 KB Output is correct
56 Correct 0 ms 332 KB Output is correct
57 Correct 73 ms 11592 KB Output is correct
58 Correct 70 ms 11432 KB Output is correct
59 Correct 71 ms 11636 KB Output is correct
60 Correct 71 ms 11664 KB Output is correct
61 Correct 79 ms 11960 KB Output is correct
62 Correct 71 ms 11972 KB Output is correct
63 Correct 80 ms 11732 KB Output is correct
64 Correct 77 ms 11756 KB Output is correct
65 Correct 95 ms 12028 KB Output is correct
66 Correct 77 ms 12064 KB Output is correct
67 Correct 90 ms 11700 KB Output is correct
68 Correct 73 ms 11628 KB Output is correct
69 Correct 77 ms 11936 KB Output is correct
70 Correct 74 ms 11856 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 2 ms 588 KB Output is correct
73 Correct 2 ms 588 KB Output is correct
74 Correct 2 ms 596 KB Output is correct
75 Correct 2 ms 580 KB Output is correct
76 Correct 2 ms 604 KB Output is correct
77 Correct 2 ms 576 KB Output is correct
78 Correct 2 ms 604 KB Output is correct
79 Correct 2 ms 600 KB Output is correct
80 Correct 71 ms 11656 KB Output is correct
81 Correct 71 ms 11676 KB Output is correct
82 Correct 78 ms 12020 KB Output is correct
83 Correct 73 ms 12024 KB Output is correct
84 Correct 1 ms 588 KB Output is correct
85 Correct 1 ms 464 KB Output is correct
86 Correct 1 ms 588 KB Output is correct
87 Correct 2 ms 604 KB Output is correct
88 Correct 2 ms 596 KB Output is correct
89 Correct 2 ms 604 KB Output is correct
90 Correct 2 ms 604 KB Output is correct
91 Correct 2 ms 604 KB Output is correct
92 Correct 2 ms 604 KB Output is correct
93 Correct 2 ms 588 KB Output is correct
94 Correct 0 ms 332 KB Output is correct
95 Correct 0 ms 332 KB Output is correct
96 Correct 0 ms 332 KB Output is correct
97 Correct 1 ms 332 KB Output is correct
98 Correct 0 ms 332 KB Output is correct
99 Correct 0 ms 332 KB Output is correct
100 Correct 0 ms 204 KB Output is correct
101 Correct 0 ms 332 KB Output is correct
102 Correct 0 ms 332 KB Output is correct
103 Correct 0 ms 332 KB Output is correct
104 Correct 5 ms 1612 KB Output is correct
105 Correct 12 ms 3592 KB Output is correct
106 Correct 1 ms 332 KB Output is correct
107 Correct 23 ms 6592 KB Output is correct
108 Correct 32 ms 9540 KB Output is correct
109 Correct 1 ms 424 KB Output is correct
110 Correct 47 ms 11376 KB Output is correct
111 Correct 58 ms 13216 KB Output is correct
112 Correct 1 ms 460 KB Output is correct
113 Correct 89 ms 20972 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 20 ms 8688 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 296 KB Output is correct
15 Correct 0 ms 296 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 0 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Incorrect 1 ms 332 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 15172 KB Output is correct
2 Correct 66 ms 14824 KB Output is correct
3 Correct 40 ms 11964 KB Output is correct
4 Correct 8 ms 2508 KB Output is correct
5 Correct 6 ms 1684 KB Output is correct
6 Correct 11 ms 3660 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 22 ms 6528 KB Output is correct
9 Correct 33 ms 9500 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 47 ms 11456 KB Output is correct
12 Correct 57 ms 13252 KB Output is correct
13 Correct 1 ms 432 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 0 ms 296 KB Output is correct
28 Correct 0 ms 296 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 0 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 332 KB Output is correct
36 Correct 0 ms 332 KB Output is correct
37 Correct 0 ms 332 KB Output is correct
38 Correct 0 ms 332 KB Output is correct
39 Correct 72 ms 15160 KB Output is correct
40 Correct 69 ms 14824 KB Output is correct
41 Correct 41 ms 11964 KB Output is correct
42 Correct 7 ms 2380 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 0 ms 332 KB Output is correct
45 Correct 0 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 336 KB Output is correct
52 Correct 0 ms 288 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 0 ms 332 KB Output is correct
56 Correct 0 ms 332 KB Output is correct
57 Correct 73 ms 11592 KB Output is correct
58 Correct 70 ms 11432 KB Output is correct
59 Correct 71 ms 11636 KB Output is correct
60 Correct 71 ms 11664 KB Output is correct
61 Correct 79 ms 11960 KB Output is correct
62 Correct 71 ms 11972 KB Output is correct
63 Correct 80 ms 11732 KB Output is correct
64 Correct 77 ms 11756 KB Output is correct
65 Correct 95 ms 12028 KB Output is correct
66 Correct 77 ms 12064 KB Output is correct
67 Correct 90 ms 11700 KB Output is correct
68 Correct 73 ms 11628 KB Output is correct
69 Correct 77 ms 11936 KB Output is correct
70 Correct 74 ms 11856 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 2 ms 588 KB Output is correct
73 Correct 2 ms 588 KB Output is correct
74 Correct 2 ms 596 KB Output is correct
75 Correct 2 ms 580 KB Output is correct
76 Correct 2 ms 604 KB Output is correct
77 Correct 2 ms 576 KB Output is correct
78 Correct 2 ms 604 KB Output is correct
79 Correct 2 ms 600 KB Output is correct
80 Correct 71 ms 11656 KB Output is correct
81 Correct 71 ms 11676 KB Output is correct
82 Correct 78 ms 12020 KB Output is correct
83 Correct 73 ms 12024 KB Output is correct
84 Correct 1 ms 588 KB Output is correct
85 Correct 1 ms 464 KB Output is correct
86 Correct 1 ms 588 KB Output is correct
87 Correct 2 ms 604 KB Output is correct
88 Correct 2 ms 596 KB Output is correct
89 Correct 2 ms 604 KB Output is correct
90 Correct 2 ms 604 KB Output is correct
91 Correct 2 ms 604 KB Output is correct
92 Correct 2 ms 604 KB Output is correct
93 Correct 2 ms 588 KB Output is correct
94 Correct 0 ms 332 KB Output is correct
95 Correct 0 ms 332 KB Output is correct
96 Correct 0 ms 332 KB Output is correct
97 Correct 1 ms 332 KB Output is correct
98 Correct 0 ms 332 KB Output is correct
99 Correct 0 ms 332 KB Output is correct
100 Correct 0 ms 204 KB Output is correct
101 Correct 0 ms 332 KB Output is correct
102 Correct 0 ms 332 KB Output is correct
103 Correct 0 ms 332 KB Output is correct
104 Correct 5 ms 1612 KB Output is correct
105 Correct 12 ms 3592 KB Output is correct
106 Correct 1 ms 332 KB Output is correct
107 Correct 23 ms 6592 KB Output is correct
108 Correct 32 ms 9540 KB Output is correct
109 Correct 1 ms 424 KB Output is correct
110 Correct 47 ms 11376 KB Output is correct
111 Correct 58 ms 13216 KB Output is correct
112 Correct 1 ms 460 KB Output is correct
113 Correct 89 ms 20972 KB Output is correct
114 Incorrect 20 ms 8688 KB Output isn't correct
115 Halted 0 ms 0 KB -