#include <bits/stdc++.h>
using namespace std;
using idata = vector<int>;
using igrid = vector<idata>;
idata height;
idata pos;
idata dp;
igrid roads;
int solve (int node, int parent, int depth) {
if (dp[node] == -1) return 0;
int mx = depth + dp[node];
for (int next : roads[node]) if (next != parent)
mx = max(mx, solve(next, node, depth + 1));
return mx;
}
int main () {
int N;
cin >> N;
height.resize(N);
pos.resize(N);
for (int i = 0; i < N; i ++) {
cin >> height[i]; height[i] --;
pos[height[i]] = i;
}
roads.resize(N);
for (int i = 1; i < N; i ++) {
int a, b;
cin >> a >> b;
a --; b --;
roads[a].push_back(b);
roads[b].push_back(a);
}
dp.resize(N, -1);
for (int i = 0; i < N; i ++) {
dp[pos[i]] = 0;
dp[pos[i]] = solve(pos[i], -1, 0);
}
cout << dp[pos[N - 1]] << endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
300 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
304 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
300 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
304 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
296 KB |
Output is correct |
17 |
Correct |
1 ms |
260 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
300 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
304 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
296 KB |
Output is correct |
17 |
Correct |
1 ms |
260 KB |
Output is correct |
18 |
Correct |
81 ms |
952 KB |
Output is correct |
19 |
Correct |
70 ms |
988 KB |
Output is correct |
20 |
Correct |
69 ms |
972 KB |
Output is correct |
21 |
Correct |
4 ms |
892 KB |
Output is correct |
22 |
Correct |
5 ms |
784 KB |
Output is correct |
23 |
Correct |
5 ms |
852 KB |
Output is correct |
24 |
Correct |
5 ms |
852 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
300 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
304 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
296 KB |
Output is correct |
17 |
Correct |
1 ms |
260 KB |
Output is correct |
18 |
Correct |
81 ms |
952 KB |
Output is correct |
19 |
Correct |
70 ms |
988 KB |
Output is correct |
20 |
Correct |
69 ms |
972 KB |
Output is correct |
21 |
Correct |
4 ms |
892 KB |
Output is correct |
22 |
Correct |
5 ms |
784 KB |
Output is correct |
23 |
Correct |
5 ms |
852 KB |
Output is correct |
24 |
Correct |
5 ms |
852 KB |
Output is correct |
25 |
Correct |
1 ms |
300 KB |
Output is correct |
26 |
Correct |
82 ms |
800 KB |
Output is correct |
27 |
Correct |
74 ms |
880 KB |
Output is correct |
28 |
Correct |
76 ms |
844 KB |
Output is correct |
29 |
Correct |
79 ms |
820 KB |
Output is correct |
30 |
Correct |
9 ms |
700 KB |
Output is correct |
31 |
Correct |
12 ms |
712 KB |
Output is correct |
32 |
Correct |
10 ms |
596 KB |
Output is correct |
33 |
Correct |
12 ms |
596 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
300 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
304 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
296 KB |
Output is correct |
17 |
Correct |
1 ms |
260 KB |
Output is correct |
18 |
Correct |
81 ms |
952 KB |
Output is correct |
19 |
Correct |
70 ms |
988 KB |
Output is correct |
20 |
Correct |
69 ms |
972 KB |
Output is correct |
21 |
Correct |
4 ms |
892 KB |
Output is correct |
22 |
Correct |
5 ms |
784 KB |
Output is correct |
23 |
Correct |
5 ms |
852 KB |
Output is correct |
24 |
Correct |
5 ms |
852 KB |
Output is correct |
25 |
Execution timed out |
2062 ms |
18764 KB |
Time limit exceeded |
26 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Execution timed out |
2068 ms |
17204 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
300 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
0 ms |
212 KB |
Output is correct |
8 |
Correct |
0 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
212 KB |
Output is correct |
10 |
Correct |
1 ms |
304 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
212 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
1 ms |
296 KB |
Output is correct |
17 |
Correct |
1 ms |
260 KB |
Output is correct |
18 |
Correct |
81 ms |
952 KB |
Output is correct |
19 |
Correct |
70 ms |
988 KB |
Output is correct |
20 |
Correct |
69 ms |
972 KB |
Output is correct |
21 |
Correct |
4 ms |
892 KB |
Output is correct |
22 |
Correct |
5 ms |
784 KB |
Output is correct |
23 |
Correct |
5 ms |
852 KB |
Output is correct |
24 |
Correct |
5 ms |
852 KB |
Output is correct |
25 |
Correct |
1 ms |
300 KB |
Output is correct |
26 |
Correct |
82 ms |
800 KB |
Output is correct |
27 |
Correct |
74 ms |
880 KB |
Output is correct |
28 |
Correct |
76 ms |
844 KB |
Output is correct |
29 |
Correct |
79 ms |
820 KB |
Output is correct |
30 |
Correct |
9 ms |
700 KB |
Output is correct |
31 |
Correct |
12 ms |
712 KB |
Output is correct |
32 |
Correct |
10 ms |
596 KB |
Output is correct |
33 |
Correct |
12 ms |
596 KB |
Output is correct |
34 |
Execution timed out |
2062 ms |
18764 KB |
Time limit exceeded |
35 |
Halted |
0 ms |
0 KB |
- |