| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 894712 |
2023-12-28T18:41:34 Z |
rainboy |
None (KOI18_robot) |
C |
|
39 ms |
17952 KB |
#include <stdio.h>
#include <stdlib.h>
#define N 100000
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;
}
int s, t, ans;
int dfs(int p, int i, int sum, int mx) {
int o;
if (i == t) {
ans = sum - mx;
return 1;
}
for (o = eo[i]; o--; ) {
int j = ej[i][o], w = ew[i][o];
if (j != p && dfs(i, j, sum + w, max(mx, w)))
return 1;
}
return 0;
}
int main() {
int n, h, i, j, w;
scanf("%d%d%d", &n, &s, &t), s--, t--;
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 < n - 1; h++) {
scanf("%d%d%d", &i, &j, &w), i--, j--;
append(i, j, w), append(j, i, w);
}
dfs(-1, s, 0, 0);
printf("%d\n", ans);
return 0;
}
Compilation message
robot.c: In function 'append':
robot.c:13:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
13 | if (o >= 2 && (o & o - 1) == 0) {
| ~~^~~
robot.c: In function 'main':
robot.c:41:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
41 | scanf("%d%d%d", &n, &s, &t), s--, t--;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
robot.c:47:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
47 | scanf("%d%d%d", &i, &j, &w), i--, j--;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
37 ms |
17748 KB |
Output is correct |
| 2 |
Correct |
25 ms |
10064 KB |
Output is correct |
| 3 |
Correct |
25 ms |
13784 KB |
Output is correct |
| 4 |
Correct |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
4 ms |
2140 KB |
Output is correct |
| 6 |
Correct |
4 ms |
2140 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
5 ms |
2392 KB |
Output is correct |
| 9 |
Correct |
1 ms |
640 KB |
Output is correct |
| 10 |
Correct |
8 ms |
3556 KB |
Output is correct |
| 11 |
Correct |
1 ms |
600 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
8 ms |
4088 KB |
Output is correct |
| 14 |
Correct |
9 ms |
3932 KB |
Output is correct |
| 15 |
Correct |
2 ms |
860 KB |
Output is correct |
| 16 |
Correct |
15 ms |
5804 KB |
Output is correct |
| 17 |
Correct |
13 ms |
7772 KB |
Output is correct |
| 18 |
Correct |
15 ms |
7260 KB |
Output is correct |
| 19 |
Correct |
2 ms |
860 KB |
Output is correct |
| 20 |
Correct |
15 ms |
6808 KB |
Output is correct |
| 21 |
Correct |
19 ms |
9308 KB |
Output is correct |
| 22 |
Correct |
20 ms |
10324 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1372 KB |
Output is correct |
| 24 |
Correct |
24 ms |
12208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
35 ms |
9984 KB |
Output is correct |
| 2 |
Correct |
26 ms |
13648 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
5 ms |
1884 KB |
Output is correct |
| 6 |
Correct |
4 ms |
2140 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
9 ms |
3532 KB |
Output is correct |
| 9 |
Correct |
6 ms |
2908 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
9 ms |
3928 KB |
Output is correct |
| 12 |
Correct |
11 ms |
3928 KB |
Output is correct |
| 13 |
Correct |
1 ms |
856 KB |
Output is correct |
| 14 |
Correct |
1 ms |
600 KB |
Output is correct |
| 15 |
Correct |
14 ms |
4952 KB |
Output is correct |
| 16 |
Correct |
17 ms |
7772 KB |
Output is correct |
| 17 |
Correct |
15 ms |
7004 KB |
Output is correct |
| 18 |
Correct |
19 ms |
7152 KB |
Output is correct |
| 19 |
Correct |
21 ms |
10584 KB |
Output is correct |
| 20 |
Correct |
25 ms |
8276 KB |
Output is correct |
| 21 |
Correct |
3 ms |
1372 KB |
Output is correct |
| 22 |
Correct |
3 ms |
1116 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
1 ms |
604 KB |
Output is correct |
| 6 |
Correct |
1 ms |
604 KB |
Output is correct |
| 7 |
Correct |
1 ms |
604 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
604 KB |
Output is correct |
| 11 |
Correct |
1 ms |
604 KB |
Output is correct |
| 12 |
Correct |
1 ms |
860 KB |
Output is correct |
| 13 |
Correct |
1 ms |
860 KB |
Output is correct |
| 14 |
Correct |
2 ms |
860 KB |
Output is correct |
| 15 |
Correct |
2 ms |
1112 KB |
Output is correct |
| 16 |
Correct |
0 ms |
408 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
36 ms |
10068 KB |
Output is correct |
| 2 |
Correct |
39 ms |
9808 KB |
Output is correct |
| 3 |
Correct |
39 ms |
17880 KB |
Output is correct |
| 4 |
Correct |
24 ms |
9936 KB |
Output is correct |
| 5 |
Correct |
32 ms |
13916 KB |
Output is correct |
| 6 |
Correct |
38 ms |
17952 KB |
Output is correct |
| 7 |
Correct |
1 ms |
348 KB |
Output is correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
4 ms |
2136 KB |
Output is correct |
| 11 |
Correct |
1 ms |
348 KB |
Output is correct |
| 12 |
Correct |
5 ms |
1884 KB |
Output is correct |
| 13 |
Correct |
5 ms |
1884 KB |
Output is correct |
| 14 |
Correct |
4 ms |
2140 KB |
Output is correct |
| 15 |
Correct |
0 ms |
428 KB |
Output is correct |
| 16 |
Correct |
1 ms |
604 KB |
Output is correct |
| 17 |
Correct |
5 ms |
2488 KB |
Output is correct |
| 18 |
Correct |
1 ms |
600 KB |
Output is correct |
| 19 |
Correct |
7 ms |
3676 KB |
Output is correct |
| 20 |
Correct |
10 ms |
3164 KB |
Output is correct |
| 21 |
Correct |
7 ms |
3104 KB |
Output is correct |
| 22 |
Correct |
1 ms |
600 KB |
Output is correct |
| 23 |
Correct |
0 ms |
348 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
604 KB |
Output is correct |
| 26 |
Correct |
8 ms |
3964 KB |
Output is correct |
| 27 |
Correct |
1 ms |
604 KB |
Output is correct |
| 28 |
Correct |
8 ms |
4024 KB |
Output is correct |
| 29 |
Correct |
11 ms |
3928 KB |
Output is correct |
| 30 |
Correct |
11 ms |
3928 KB |
Output is correct |
| 31 |
Correct |
1 ms |
856 KB |
Output is correct |
| 32 |
Correct |
1 ms |
860 KB |
Output is correct |
| 33 |
Correct |
1 ms |
604 KB |
Output is correct |
| 34 |
Correct |
12 ms |
5980 KB |
Output is correct |
| 35 |
Correct |
3 ms |
856 KB |
Output is correct |
| 36 |
Correct |
23 ms |
4952 KB |
Output is correct |
| 37 |
Correct |
15 ms |
4952 KB |
Output is correct |
| 38 |
Correct |
17 ms |
7736 KB |
Output is correct |
| 39 |
Correct |
2 ms |
856 KB |
Output is correct |
| 40 |
Correct |
1 ms |
348 KB |
Output is correct |
| 41 |
Correct |
14 ms |
7256 KB |
Output is correct |
| 42 |
Correct |
2 ms |
860 KB |
Output is correct |
| 43 |
Correct |
15 ms |
7004 KB |
Output is correct |
| 44 |
Correct |
17 ms |
7152 KB |
Output is correct |
| 45 |
Correct |
18 ms |
7148 KB |
Output is correct |
| 46 |
Correct |
18 ms |
9104 KB |
Output is correct |
| 47 |
Correct |
20 ms |
10428 KB |
Output is correct |
| 48 |
Correct |
25 ms |
8476 KB |
Output is correct |
| 49 |
Correct |
25 ms |
8272 KB |
Output is correct |
| 50 |
Correct |
2 ms |
1368 KB |
Output is correct |
| 51 |
Correct |
3 ms |
1116 KB |
Output is correct |
| 52 |
Correct |
3 ms |
1116 KB |
Output is correct |
| 53 |
Correct |
24 ms |
12116 KB |
Output is correct |
