oj.uz

Submission #65666

# Submission time Handle Problem Language Result Execution time Memory
65666 2018-08-08T11:12:18 Z imeimi2000 None (KOI18_robot) C++17
100 / 100
 139 ms 59008 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <unordered_map>
#include <functional>
#include <cstring>
#include <cmath>
#include <ctime>
#include <cstdlib>

using namespace std;
typedef long long llong;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<llong, llong> pll;

struct _edge {
    int x, c;
    _edge(int x, int c) : x(x), c(c) {}
};

int n, s, e;
vector<_edge> edge[100001];
int mx[100001];
int dist[100001];

void dfs(int x, int p) {
    for (_edge i : edge[x]) {
        if (i.x == p) continue;
        mx[i.x] = max(mx[x], i.c);
        dist[i.x] = dist[x] + i.c;
        dfs(i.x, x);
    }
}

int main() {
    scanf("%d%d%d", &n, &s, &e);
    for (int i = 1; i < n; ++i) {
        int a, b, c;
        scanf("%d%d%d", &a, &b, &c);
        edge[a].emplace_back(b, c);
        edge[b].emplace_back(a, c);
    }
    dfs(s, 0);
    printf("%d\n", dist[e] - mx[e]);
	return 0;
}

Compilation message

robot.cpp: In function 'int main()':
robot.cpp:41:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &s, &e);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
robot.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d", &a, &b, &c);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 12792 KB Output is correct
2 Correct 57 ms 13432 KB Output is correct
3 Correct 53 ms 13440 KB Output is correct
4 Correct 5 ms 13440 KB Output is correct
5 Correct 12 ms 13440 KB Output is correct
6 Correct 15 ms 13440 KB Output is correct
7 Correct 4 ms 13440 KB Output is correct
8 Correct 19 ms 13440 KB Output is correct
9 Correct 5 ms 13440 KB Output is correct
10 Correct 17 ms 13440 KB Output is correct
11 Correct 4 ms 13440 KB Output is correct
12 Correct 4 ms 13440 KB Output is correct
13 Correct 21 ms 13440 KB Output is correct
14 Correct 39 ms 13440 KB Output is correct
15 Correct 6 ms 13440 KB Output is correct
16 Correct 26 ms 13440 KB Output is correct
17 Correct 30 ms 14288 KB Output is correct
18 Correct 33 ms 15156 KB Output is correct
19 Correct 7 ms 15156 KB Output is correct
20 Correct 36 ms 16772 KB Output is correct
21 Correct 39 ms 18268 KB Output is correct
22 Correct 45 ms 21280 KB Output is correct
23 Correct 8 ms 21280 KB Output is correct
24 Correct 58 ms 22136 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 22704 KB Output is correct
2 Correct 61 ms 25136 KB Output is correct
3 Correct 7 ms 25136 KB Output is correct
4 Correct 5 ms 25136 KB Output is correct
5 Correct 17 ms 25136 KB Output is correct
6 Correct 12 ms 25136 KB Output is correct
7 Correct 5 ms 25136 KB Output is correct
8 Correct 16 ms 25136 KB Output is correct
9 Correct 20 ms 25136 KB Output is correct
10 Correct 5 ms 25136 KB Output is correct
11 Correct 25 ms 25136 KB Output is correct
12 Correct 38 ms 25136 KB Output is correct
13 Correct 9 ms 25136 KB Output is correct
14 Correct 6 ms 25136 KB Output is correct
15 Correct 50 ms 25136 KB Output is correct
16 Correct 32 ms 25996 KB Output is correct
17 Correct 40 ms 27508 KB Output is correct
18 Correct 56 ms 27508 KB Output is correct
19 Correct 52 ms 31808 KB Output is correct
20 Correct 66 ms 31808 KB Output is correct
21 Correct 10 ms 31808 KB Output is correct
22 Correct 12 ms 31808 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31808 KB Output is correct
2 Correct 6 ms 31808 KB Output is correct
3 Correct 7 ms 31808 KB Output is correct
4 Correct 5 ms 31808 KB Output is correct
5 Correct 7 ms 31808 KB Output is correct
6 Correct 6 ms 31808 KB Output is correct
7 Correct 7 ms 31808 KB Output is correct
8 Correct 5 ms 31808 KB Output is correct
9 Correct 5 ms 31808 KB Output is correct
10 Correct 8 ms 31808 KB Output is correct
11 Correct 8 ms 31808 KB Output is correct
12 Correct 8 ms 31808 KB Output is correct
13 Correct 8 ms 31808 KB Output is correct
14 Correct 8 ms 31808 KB Output is correct
15 Correct 8 ms 31808 KB Output is correct
16 Correct 5 ms 31808 KB Output is correct

Subtask #4
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 33748 KB Output is correct
2 Correct 115 ms 35024 KB Output is correct
3 Correct 63 ms 40032 KB Output is correct
4 Correct 58 ms 40592 KB Output is correct
5 Correct 53 ms 40592 KB Output is correct
6 Correct 139 ms 44496 KB Output is correct
7 Correct 7 ms 44496 KB Output is correct
8 Correct 6 ms 44496 KB Output is correct
9 Correct 6 ms 44496 KB Output is correct
10 Correct 11 ms 44496 KB Output is correct
11 Correct 7 ms 44496 KB Output is correct
12 Correct 15 ms 44496 KB Output is correct
13 Correct 20 ms 44496 KB Output is correct
14 Correct 13 ms 44496 KB Output is correct
15 Correct 4 ms 44496 KB Output is correct
16 Correct 6 ms 44496 KB Output is correct
17 Correct 18 ms 44496 KB Output is correct
18 Correct 6 ms 44496 KB Output is correct
19 Correct 20 ms 44496 KB Output is correct
20 Correct 22 ms 44496 KB Output is correct
21 Correct 23 ms 44496 KB Output is correct
22 Correct 8 ms 44496 KB Output is correct
23 Correct 6 ms 44496 KB Output is correct
24 Correct 5 ms 44496 KB Output is correct
25 Correct 6 ms 44496 KB Output is correct
26 Correct 22 ms 44496 KB Output is correct
27 Correct 7 ms 44496 KB Output is correct
28 Correct 23 ms 44496 KB Output is correct
29 Correct 32 ms 44496 KB Output is correct
30 Correct 31 ms 44496 KB Output is correct
31 Correct 7 ms 44496 KB Output is correct
32 Correct 9 ms 44496 KB Output is correct
33 Correct 6 ms 44496 KB Output is correct
34 Correct 34 ms 44496 KB Output is correct
35 Correct 9 ms 44496 KB Output is correct
36 Correct 42 ms 44496 KB Output is correct
37 Correct 61 ms 44984 KB Output is correct
38 Correct 28 ms 46656 KB Output is correct
39 Correct 7 ms 46656 KB Output is correct
40 Correct 5 ms 46656 KB Output is correct
41 Correct 40 ms 47648 KB Output is correct
42 Correct 9 ms 47648 KB Output is correct
43 Correct 41 ms 49132 KB Output is correct
44 Correct 49 ms 49132 KB Output is correct
45 Correct 49 ms 49784 KB Output is correct
46 Correct 45 ms 52468 KB Output is correct
47 Correct 47 ms 55616 KB Output is correct
48 Correct 79 ms 55616 KB Output is correct
49 Correct 73 ms 55616 KB Output is correct
50 Correct 9 ms 55616 KB Output is correct
51 Correct 11 ms 55616 KB Output is correct
52 Correct 10 ms 55616 KB Output is correct
53 Correct 50 ms 59008 KB Output is correct