답안 #93298 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
93298	2019-01-07T13:16:41 Z	toloraia	Hard route (IZhO17_road)	C++14	52 / 100	2000 ms	58516 KB

road

#include <bits/stdc++.h>
#define ll long long
#define F first
#define S second
using namespace std;

const int N = 5e5 + 5;

int n;
vector < int > g[N];
ll ans = -1, num;
ll D[N];

void dfs (int k, int p){
    D[k] = 0;
    for (int u: g[k]){
        if (u == p)
            continue;
        dfs (u, k);
        D[k] = max (D[k], D[u]);
    }
    D[k]++;
}

void go (int k, int p, ll d, ll dd){
    if ((int)g[k].size() == 1 && p != 0){
        if (ans == d * dd)
            num++;
        if (ans < d * dd){
            ans = d * dd;
            num = 1;
        }
    }
    ll x = 0, y = 0;
    for (int u: g[k]){
        if (u == p)
            continue;
        y = max (y, D[u]);
        if (x < y)
            swap (x, y);
    }
    for (int u: g[k]){
        if (u == p)
            continue;
        ll t = x;
        if (t == D[u])
            t = y;
        go (u, k, d + 1, max (dd, t));
    }
}

int main()
{
    ios::sync_with_stdio(false);
    cin>>n;
    for (int i = 1; i < n; i++){
        int u, v;
        cin>>u>>v;
        g[u].push_back (v);
        g[v].push_back (u);
    }
    for (int S = 1; S <= n; S++){
        if ((int)g[S].size() > 1)
            continue;
        dfs (S, 0);
        go (S, 0, 0, 0);
    }
    cout<<ans<<" "<<num / 2<<endl;
    return 0;
}

Subtask #1
19.0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	12024 KB	Output is correct
2	Correct	13 ms	12152 KB	Output is correct
3	Correct	13 ms	12152 KB	Output is correct
4	Correct	12 ms	12152 KB	Output is correct
5	Correct	12 ms	12024 KB	Output is correct
6	Correct	10 ms	12024 KB	Output is correct
7	Correct	10 ms	12024 KB	Output is correct
8	Correct	11 ms	12024 KB	Output is correct
9	Correct	12 ms	12152 KB	Output is correct
10	Correct	10 ms	12024 KB	Output is correct
11	Correct	12 ms	12152 KB	Output is correct
12	Correct	10 ms	12152 KB	Output is correct
13	Correct	10 ms	12152 KB	Output is correct
14	Correct	10 ms	12152 KB	Output is correct
15	Correct	10 ms	12152 KB	Output is correct
16	Correct	10 ms	12152 KB	Output is correct
17	Correct	10 ms	12152 KB	Output is correct
18	Correct	10 ms	12152 KB	Output is correct
19	Correct	10 ms	12152 KB	Output is correct
20	Correct	10 ms	12024 KB	Output is correct
21	Correct	9 ms	12028 KB	Output is correct
22	Correct	10 ms	12024 KB	Output is correct
23	Correct	10 ms	12024 KB	Output is correct
24	Correct	10 ms	12152 KB	Output is correct

Subtask #2
33.0 / 33.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	12024 KB	Output is correct
2	Correct	13 ms	12152 KB	Output is correct
3	Correct	13 ms	12152 KB	Output is correct
4	Correct	12 ms	12152 KB	Output is correct
5	Correct	12 ms	12024 KB	Output is correct
6	Correct	10 ms	12024 KB	Output is correct
7	Correct	10 ms	12024 KB	Output is correct
8	Correct	11 ms	12024 KB	Output is correct
9	Correct	12 ms	12152 KB	Output is correct
10	Correct	10 ms	12024 KB	Output is correct
11	Correct	12 ms	12152 KB	Output is correct
12	Correct	10 ms	12152 KB	Output is correct
13	Correct	10 ms	12152 KB	Output is correct
14	Correct	10 ms	12152 KB	Output is correct
15	Correct	10 ms	12152 KB	Output is correct
16	Correct	10 ms	12152 KB	Output is correct
17	Correct	10 ms	12152 KB	Output is correct
18	Correct	10 ms	12152 KB	Output is correct
19	Correct	10 ms	12152 KB	Output is correct
20	Correct	10 ms	12024 KB	Output is correct
21	Correct	9 ms	12028 KB	Output is correct
22	Correct	10 ms	12024 KB	Output is correct
23	Correct	10 ms	12024 KB	Output is correct
24	Correct	10 ms	12152 KB	Output is correct
25	Correct	295 ms	12536 KB	Output is correct
26	Correct	298 ms	12408 KB	Output is correct
27	Correct	300 ms	12536 KB	Output is correct
28	Correct	296 ms	12536 KB	Output is correct
29	Correct	346 ms	12516 KB	Output is correct
30	Correct	381 ms	12536 KB	Output is correct
31	Correct	365 ms	12508 KB	Output is correct
32	Correct	372 ms	12664 KB	Output is correct
33	Correct	15 ms	12536 KB	Output is correct
34	Correct	14 ms	12540 KB	Output is correct
35	Correct	14 ms	12536 KB	Output is correct
36	Correct	15 ms	12636 KB	Output is correct
37	Correct	13 ms	12636 KB	Output is correct
38	Correct	12 ms	12664 KB	Output is correct
39	Correct	13 ms	12408 KB	Output is correct
40	Correct	15 ms	12408 KB	Output is correct
41	Correct	20 ms	12280 KB	Output is correct
42	Correct	30 ms	12408 KB	Output is correct
43	Correct	46 ms	12280 KB	Output is correct
44	Correct	79 ms	12280 KB	Output is correct
45	Correct	145 ms	12280 KB	Output is correct
46	Correct	164 ms	12280 KB	Output is correct
47	Correct	366 ms	12280 KB	Output is correct
48	Correct	437 ms	12408 KB	Output is correct

Subtask #3
0 / 48.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	12024 KB	Output is correct
2	Correct	13 ms	12152 KB	Output is correct
3	Correct	13 ms	12152 KB	Output is correct
4	Correct	12 ms	12152 KB	Output is correct
5	Correct	12 ms	12024 KB	Output is correct
6	Correct	10 ms	12024 KB	Output is correct
7	Correct	10 ms	12024 KB	Output is correct
8	Correct	11 ms	12024 KB	Output is correct
9	Correct	12 ms	12152 KB	Output is correct
10	Correct	10 ms	12024 KB	Output is correct
11	Correct	12 ms	12152 KB	Output is correct
12	Correct	10 ms	12152 KB	Output is correct
13	Correct	10 ms	12152 KB	Output is correct
14	Correct	10 ms	12152 KB	Output is correct
15	Correct	10 ms	12152 KB	Output is correct
16	Correct	10 ms	12152 KB	Output is correct
17	Correct	10 ms	12152 KB	Output is correct
18	Correct	10 ms	12152 KB	Output is correct
19	Correct	10 ms	12152 KB	Output is correct
20	Correct	10 ms	12024 KB	Output is correct
21	Correct	9 ms	12028 KB	Output is correct
22	Correct	10 ms	12024 KB	Output is correct
23	Correct	10 ms	12024 KB	Output is correct
24	Correct	10 ms	12152 KB	Output is correct
25	Correct	295 ms	12536 KB	Output is correct
26	Correct	298 ms	12408 KB	Output is correct
27	Correct	300 ms	12536 KB	Output is correct
28	Correct	296 ms	12536 KB	Output is correct
29	Correct	346 ms	12516 KB	Output is correct
30	Correct	381 ms	12536 KB	Output is correct
31	Correct	365 ms	12508 KB	Output is correct
32	Correct	372 ms	12664 KB	Output is correct
33	Correct	15 ms	12536 KB	Output is correct
34	Correct	14 ms	12540 KB	Output is correct
35	Correct	14 ms	12536 KB	Output is correct
36	Correct	15 ms	12636 KB	Output is correct
37	Correct	13 ms	12636 KB	Output is correct
38	Correct	12 ms	12664 KB	Output is correct
39	Correct	13 ms	12408 KB	Output is correct
40	Correct	15 ms	12408 KB	Output is correct
41	Correct	20 ms	12280 KB	Output is correct
42	Correct	30 ms	12408 KB	Output is correct
43	Correct	46 ms	12280 KB	Output is correct
44	Correct	79 ms	12280 KB	Output is correct
45	Correct	145 ms	12280 KB	Output is correct
46	Correct	164 ms	12280 KB	Output is correct
47	Correct	366 ms	12280 KB	Output is correct
48	Correct	437 ms	12408 KB	Output is correct
49	Execution timed out	2056 ms	58516 KB	Time limit exceeded
50	Halted	0 ms	0 KB	-

답안 #93298

Compilation message

Subtask #1 19.0 / 19.0

Subtask #2 33.0 / 33.0

Subtask #3 0 / 48.0

Subtask #1
19.0 / 19.0

Subtask #2
33.0 / 33.0

Subtask #3
0 / 48.0