답안 #561118

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
561118	2022-05-12T09:38:54 Z	Zanite	꿈 (IOI13_dreaming)	C++17	47 / 100	134 ms	23156 KB

dreaming

#include "dreaming.h"

#include <bits/stdc++.h>
using namespace std;

#define pii pair<int, int>
#define fi first
#define se second

const int INF = 2e9;
const int maxN = 1e5 + 5;

void chmax(int &a, int b) {a = max(a, b);}
void chmin(int &a, int b) {a = min(a, b);}

struct Node {
    int child, lg;
    Node(int _child, int _lg) :
        child(_child),
        lg(_lg)
    {}

    bool operator < (const Node &other) const {
        return lg > other.lg;
    }
};

int N, M, L, ans;
vector<pii> adj[maxN];
vector<Node> children[maxN];
int idx[maxN], longest[maxN], newLongest[maxN];

vector<int> curComponent, components;
void dfs(int cur, int par, int id) {
    idx[cur] = id;
	curComponent.push_back(cur);

    for (auto a : adj[cur]) {
        int nxt, w;
        tie(nxt, w) = a;
        if (nxt == par) continue;

        dfs(nxt, cur, id);
        chmax(longest[cur], longest[nxt] + w);
        children[cur].push_back(Node(nxt, longest[nxt] + w));
    }
}

void reroot(int cur, int par, int downwardsEdge) {
    if (par != -1) {
        // push "parent" as cur's child
        if (children[par][0].child == cur) {
            if (children[par].size() > 1) {
                children[cur].push_back(Node(par, children[par][1].lg + downwardsEdge));
            } else {
                children[cur].push_back(Node(par, downwardsEdge));
            }
            
        } else {
            children[cur].push_back(Node(par, children[par][0].lg + downwardsEdge));
        }
    }

	sort(children[cur].begin(), children[cur].end());

	// update newLongest
	for (auto c : children[cur]) {
		chmax(newLongest[cur], c.lg);
	}

	// go to children
	for (auto a : adj[cur]) {
		int nxt, w;
		tie(nxt, w) = a;
		if (nxt == par) continue;

		reroot(nxt, cur, w);
	}
}

void calculateTree(int root, int id) {
    // gather data about longest and children's longest for each node
	curComponent.clear();
    dfs(root, -1, id);

    // do reroot
    reroot(root, -1, -1);

	// find out the minimum newLongest of the component
	int curMin = INF;
	for (auto i : curComponent) {
		chmax(ans, newLongest[i]);
		chmin(curMin, newLongest[i]);
	}
	components.push_back(curMin);
}

int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    ::N = N, ::M = M, ::L = L;

    for (int i = 0; i < M; i++) {
        adj[A[i]].push_back({B[i], T[i]});
        adj[B[i]].push_back({A[i], T[i]});
    }

    for (int i = 0, cur = 1; i < N; i++) {
        if (idx[i] == 0) {
            calculateTree(i, cur);
            cur++;
        }
    }

	/*
	for (int i = 0; i < N; i++) {
		printf("%d: %d %d\n", i, idx[i], newLongest[i]);
	}
	*/

	sort(components.begin(), components.end());
	int s = components.size();

	if (components.size() == 2) {
		chmax(ans, components[s-1] + components[s-2] + L);
	} else {
		int pos[3];
		pos[0] = max(
			components[s-1] + components[s-2] + L,
			components[s-2] + components[s-3] + 2*L
		);
		pos[1] = max(
			components[s-1] + components[s-2] + L,
			components[s-1] + components[s-3] + 2*L
		);
		pos[2] = max(
			components[s-1] + components[s-3] + L,
			components[s-1] + components[s-2] + 2*L
		);
		chmax(ans, min({pos[0], pos[1], pos[2]}));
	}
	return ans;
}

Subtask #1
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	67 ms	17904 KB	Output is correct
2	Correct	78 ms	17588 KB	Output is correct
3	Correct	60 ms	15120 KB	Output is correct
4	Correct	9 ms	6868 KB	Output is correct
5	Correct	7 ms	6092 KB	Output is correct
6	Correct	14 ms	7844 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	28 ms	10320 KB	Output is correct
9	Correct	37 ms	13056 KB	Output is correct
10	Correct	3 ms	5076 KB	Output is correct
11	Correct	63 ms	14300 KB	Output is correct
12	Correct	95 ms	16044 KB	Output is correct
13	Correct	5 ms	5148 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4948 KB	Output is correct
2	Correct	3 ms	5028 KB	Output is correct
3	Correct	3 ms	4948 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	4948 KB	Output is correct
6	Correct	2 ms	4948 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4976 KB	Output is correct
9	Correct	2 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	2 ms	4948 KB	Output is correct
14	Correct	2 ms	4948 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	4 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	2 ms	4948 KB	Output is correct
22	Correct	2 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	4 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	67 ms	17904 KB	Output is correct
2	Correct	78 ms	17588 KB	Output is correct
3	Correct	60 ms	15120 KB	Output is correct
4	Correct	9 ms	6868 KB	Output is correct
5	Correct	7 ms	6092 KB	Output is correct
6	Correct	14 ms	7844 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	28 ms	10320 KB	Output is correct
9	Correct	37 ms	13056 KB	Output is correct
10	Correct	3 ms	5076 KB	Output is correct
11	Correct	63 ms	14300 KB	Output is correct
12	Correct	95 ms	16044 KB	Output is correct
13	Correct	5 ms	5148 KB	Output is correct
14	Correct	3 ms	4948 KB	Output is correct
15	Correct	3 ms	5028 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	2 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	3 ms	4976 KB	Output is correct
22	Correct	2 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	3 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	2 ms	4948 KB	Output is correct
27	Correct	2 ms	4948 KB	Output is correct
28	Correct	3 ms	4948 KB	Output is correct
29	Correct	3 ms	4948 KB	Output is correct
30	Correct	3 ms	4948 KB	Output is correct
31	Correct	3 ms	4948 KB	Output is correct
32	Correct	4 ms	4948 KB	Output is correct
33	Correct	3 ms	4948 KB	Output is correct
34	Correct	2 ms	4948 KB	Output is correct
35	Correct	2 ms	4948 KB	Output is correct
36	Correct	3 ms	4948 KB	Output is correct
37	Correct	4 ms	4948 KB	Output is correct
38	Correct	3 ms	4948 KB	Output is correct
39	Correct	67 ms	17916 KB	Output is correct
40	Correct	70 ms	17580 KB	Output is correct
41	Correct	49 ms	15088 KB	Output is correct
42	Correct	13 ms	6868 KB	Output is correct
43	Correct	3 ms	4948 KB	Output is correct
44	Correct	3 ms	4948 KB	Output is correct
45	Correct	3 ms	4948 KB	Output is correct
46	Correct	3 ms	4948 KB	Output is correct
47	Correct	3 ms	4948 KB	Output is correct
48	Correct	2 ms	4948 KB	Output is correct
49	Correct	3 ms	4948 KB	Output is correct
50	Correct	3 ms	4948 KB	Output is correct
51	Correct	3 ms	4948 KB	Output is correct
52	Correct	3 ms	4948 KB	Output is correct
53	Correct	3 ms	4948 KB	Output is correct
54	Correct	2 ms	4948 KB	Output is correct
55	Correct	3 ms	4948 KB	Output is correct
56	Correct	3 ms	4948 KB	Output is correct
57	Correct	90 ms	14824 KB	Output is correct
58	Correct	92 ms	14636 KB	Output is correct
59	Correct	134 ms	14956 KB	Output is correct
60	Correct	102 ms	14768 KB	Output is correct
61	Correct	90 ms	15032 KB	Output is correct
62	Correct	96 ms	14892 KB	Output is correct
63	Correct	82 ms	15028 KB	Output is correct
64	Correct	102 ms	15012 KB	Output is correct
65	Correct	86 ms	15060 KB	Output is correct
66	Correct	93 ms	14992 KB	Output is correct
67	Correct	105 ms	14852 KB	Output is correct
68	Correct	114 ms	14900 KB	Output is correct
69	Correct	96 ms	14768 KB	Output is correct
70	Correct	97 ms	14784 KB	Output is correct
71	Correct	3 ms	4948 KB	Output is correct
72	Correct	4 ms	5204 KB	Output is correct
73	Correct	4 ms	5204 KB	Output is correct
74	Correct	5 ms	5332 KB	Output is correct
75	Correct	4 ms	5204 KB	Output is correct
76	Correct	5 ms	5204 KB	Output is correct
77	Correct	6 ms	5204 KB	Output is correct
78	Correct	5 ms	5332 KB	Output is correct
79	Correct	5 ms	5332 KB	Output is correct
80	Correct	105 ms	14740 KB	Output is correct
81	Correct	90 ms	14776 KB	Output is correct
82	Correct	92 ms	15028 KB	Output is correct
83	Correct	105 ms	15100 KB	Output is correct
84	Correct	4 ms	5204 KB	Output is correct
85	Correct	4 ms	5204 KB	Output is correct
86	Correct	5 ms	5204 KB	Output is correct
87	Correct	4 ms	5204 KB	Output is correct
88	Correct	4 ms	5204 KB	Output is correct
89	Correct	4 ms	5280 KB	Output is correct
90	Correct	4 ms	5204 KB	Output is correct
91	Correct	4 ms	5204 KB	Output is correct
92	Correct	4 ms	5204 KB	Output is correct
93	Correct	5 ms	5204 KB	Output is correct
94	Correct	3 ms	4948 KB	Output is correct
95	Correct	3 ms	4948 KB	Output is correct
96	Correct	3 ms	4948 KB	Output is correct
97	Correct	3 ms	4948 KB	Output is correct
98	Correct	3 ms	4948 KB	Output is correct
99	Correct	3 ms	4948 KB	Output is correct
100	Correct	3 ms	4948 KB	Output is correct
101	Correct	3 ms	4948 KB	Output is correct
102	Correct	3 ms	4948 KB	Output is correct
103	Correct	3 ms	4948 KB	Output is correct
104	Correct	9 ms	6100 KB	Output is correct
105	Correct	16 ms	7764 KB	Output is correct
106	Correct	3 ms	4948 KB	Output is correct
107	Correct	32 ms	10288 KB	Output is correct
108	Correct	39 ms	13092 KB	Output is correct
109	Correct	3 ms	5076 KB	Output is correct
110	Correct	60 ms	14240 KB	Output is correct
111	Correct	74 ms	16004 KB	Output is correct
112	Correct	3 ms	5076 KB	Output is correct
113	Correct	96 ms	23156 KB	Output is correct

Subtask #4
0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	35 ms	10536 KB	Output is correct
2	Correct	35 ms	10620 KB	Output is correct
3	Correct	34 ms	10584 KB	Output is correct
4	Correct	29 ms	10628 KB	Output is correct
5	Correct	29 ms	10596 KB	Output is correct
6	Correct	31 ms	11208 KB	Output is correct
7	Correct	33 ms	10816 KB	Output is correct
8	Correct	29 ms	10448 KB	Output is correct
9	Correct	28 ms	10500 KB	Output is correct
10	Correct	30 ms	10856 KB	Output is correct
11	Correct	2 ms	4948 KB	Output is correct
12	Correct	7 ms	6620 KB	Output is correct
13	Correct	7 ms	6736 KB	Output is correct
14	Correct	8 ms	6608 KB	Output is correct
15	Correct	9 ms	6616 KB	Output is correct
16	Correct	7 ms	6608 KB	Output is correct
17	Correct	9 ms	6224 KB	Output is correct
18	Correct	9 ms	6736 KB	Output is correct
19	Correct	6 ms	6608 KB	Output is correct
20	Incorrect	2 ms	4948 KB	Output isn't correct
21	Halted	0 ms	0 KB	-

Subtask #5
0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4948 KB	Output is correct
2	Correct	3 ms	5028 KB	Output is correct
3	Correct	3 ms	4948 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	4948 KB	Output is correct
6	Correct	2 ms	4948 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4976 KB	Output is correct
9	Correct	2 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	2 ms	4948 KB	Output is correct
14	Correct	2 ms	4948 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	4 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	2 ms	4948 KB	Output is correct
22	Correct	2 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	4 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	3 ms	5076 KB	Output is correct
27	Correct	3 ms	5204 KB	Output is correct
28	Correct	4 ms	5204 KB	Output is correct
29	Correct	3 ms	5076 KB	Output is correct
30	Correct	4 ms	5204 KB	Output is correct
31	Correct	4 ms	5204 KB	Output is correct
32	Correct	3 ms	5076 KB	Output is correct
33	Correct	4 ms	5204 KB	Output is correct
34	Correct	4 ms	5204 KB	Output is correct
35	Correct	3 ms	4948 KB	Output is correct
36	Correct	3 ms	4948 KB	Output is correct
37	Correct	3 ms	4948 KB	Output is correct
38	Correct	3 ms	4948 KB	Output is correct
39	Correct	4 ms	4948 KB	Output is correct
40	Correct	3 ms	4948 KB	Output is correct
41	Correct	3 ms	4948 KB	Output is correct
42	Correct	3 ms	4948 KB	Output is correct
43	Correct	3 ms	4948 KB	Output is correct
44	Correct	3 ms	4948 KB	Output is correct
45	Correct	3 ms	4948 KB	Output is correct
46	Correct	3 ms	4948 KB	Output is correct
47	Correct	2 ms	4948 KB	Output is correct
48	Correct	4 ms	4948 KB	Output is correct
49	Correct	3 ms	4936 KB	Output is correct
50	Correct	3 ms	4948 KB	Output is correct
51	Correct	3 ms	4948 KB	Output is correct
52	Incorrect	3 ms	4948 KB	Output isn't correct
53	Halted	0 ms	0 KB	-

Subtask #6
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	67 ms	17904 KB	Output is correct
2	Correct	78 ms	17588 KB	Output is correct
3	Correct	60 ms	15120 KB	Output is correct
4	Correct	9 ms	6868 KB	Output is correct
5	Correct	7 ms	6092 KB	Output is correct
6	Correct	14 ms	7844 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	28 ms	10320 KB	Output is correct
9	Correct	37 ms	13056 KB	Output is correct
10	Correct	3 ms	5076 KB	Output is correct
11	Correct	63 ms	14300 KB	Output is correct
12	Correct	95 ms	16044 KB	Output is correct
13	Correct	5 ms	5148 KB	Output is correct
14	Correct	3 ms	4948 KB	Output is correct
15	Correct	3 ms	5028 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	2 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	3 ms	4976 KB	Output is correct
22	Correct	2 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	3 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	2 ms	4948 KB	Output is correct
27	Correct	2 ms	4948 KB	Output is correct
28	Correct	3 ms	4948 KB	Output is correct
29	Correct	3 ms	4948 KB	Output is correct
30	Correct	3 ms	4948 KB	Output is correct
31	Correct	3 ms	4948 KB	Output is correct
32	Correct	4 ms	4948 KB	Output is correct
33	Correct	3 ms	4948 KB	Output is correct
34	Correct	2 ms	4948 KB	Output is correct
35	Correct	2 ms	4948 KB	Output is correct
36	Correct	3 ms	4948 KB	Output is correct
37	Correct	4 ms	4948 KB	Output is correct
38	Correct	3 ms	4948 KB	Output is correct
39	Correct	67 ms	17916 KB	Output is correct
40	Correct	70 ms	17580 KB	Output is correct
41	Correct	49 ms	15088 KB	Output is correct
42	Correct	13 ms	6868 KB	Output is correct
43	Correct	3 ms	4948 KB	Output is correct
44	Correct	3 ms	4948 KB	Output is correct
45	Correct	3 ms	4948 KB	Output is correct
46	Correct	3 ms	4948 KB	Output is correct
47	Correct	3 ms	4948 KB	Output is correct
48	Correct	2 ms	4948 KB	Output is correct
49	Correct	3 ms	4948 KB	Output is correct
50	Correct	3 ms	4948 KB	Output is correct
51	Correct	3 ms	4948 KB	Output is correct
52	Correct	3 ms	4948 KB	Output is correct
53	Correct	3 ms	4948 KB	Output is correct
54	Correct	2 ms	4948 KB	Output is correct
55	Correct	3 ms	4948 KB	Output is correct
56	Correct	3 ms	4948 KB	Output is correct
57	Correct	90 ms	14824 KB	Output is correct
58	Correct	92 ms	14636 KB	Output is correct
59	Correct	134 ms	14956 KB	Output is correct
60	Correct	102 ms	14768 KB	Output is correct
61	Correct	90 ms	15032 KB	Output is correct
62	Correct	96 ms	14892 KB	Output is correct
63	Correct	82 ms	15028 KB	Output is correct
64	Correct	102 ms	15012 KB	Output is correct
65	Correct	86 ms	15060 KB	Output is correct
66	Correct	93 ms	14992 KB	Output is correct
67	Correct	105 ms	14852 KB	Output is correct
68	Correct	114 ms	14900 KB	Output is correct
69	Correct	96 ms	14768 KB	Output is correct
70	Correct	97 ms	14784 KB	Output is correct
71	Correct	3 ms	4948 KB	Output is correct
72	Correct	4 ms	5204 KB	Output is correct
73	Correct	4 ms	5204 KB	Output is correct
74	Correct	5 ms	5332 KB	Output is correct
75	Correct	4 ms	5204 KB	Output is correct
76	Correct	5 ms	5204 KB	Output is correct
77	Correct	6 ms	5204 KB	Output is correct
78	Correct	5 ms	5332 KB	Output is correct
79	Correct	5 ms	5332 KB	Output is correct
80	Correct	105 ms	14740 KB	Output is correct
81	Correct	90 ms	14776 KB	Output is correct
82	Correct	92 ms	15028 KB	Output is correct
83	Correct	105 ms	15100 KB	Output is correct
84	Correct	4 ms	5204 KB	Output is correct
85	Correct	4 ms	5204 KB	Output is correct
86	Correct	5 ms	5204 KB	Output is correct
87	Correct	4 ms	5204 KB	Output is correct
88	Correct	4 ms	5204 KB	Output is correct
89	Correct	4 ms	5280 KB	Output is correct
90	Correct	4 ms	5204 KB	Output is correct
91	Correct	4 ms	5204 KB	Output is correct
92	Correct	4 ms	5204 KB	Output is correct
93	Correct	5 ms	5204 KB	Output is correct
94	Correct	3 ms	4948 KB	Output is correct
95	Correct	3 ms	4948 KB	Output is correct
96	Correct	3 ms	4948 KB	Output is correct
97	Correct	3 ms	4948 KB	Output is correct
98	Correct	3 ms	4948 KB	Output is correct
99	Correct	3 ms	4948 KB	Output is correct
100	Correct	3 ms	4948 KB	Output is correct
101	Correct	3 ms	4948 KB	Output is correct
102	Correct	3 ms	4948 KB	Output is correct
103	Correct	3 ms	4948 KB	Output is correct
104	Correct	9 ms	6100 KB	Output is correct
105	Correct	16 ms	7764 KB	Output is correct
106	Correct	3 ms	4948 KB	Output is correct
107	Correct	32 ms	10288 KB	Output is correct
108	Correct	39 ms	13092 KB	Output is correct
109	Correct	3 ms	5076 KB	Output is correct
110	Correct	60 ms	14240 KB	Output is correct
111	Correct	74 ms	16004 KB	Output is correct
112	Correct	3 ms	5076 KB	Output is correct
113	Correct	96 ms	23156 KB	Output is correct
114	Correct	35 ms	10536 KB	Output is correct
115	Correct	35 ms	10620 KB	Output is correct
116	Correct	34 ms	10584 KB	Output is correct
117	Correct	29 ms	10628 KB	Output is correct
118	Correct	29 ms	10596 KB	Output is correct
119	Correct	31 ms	11208 KB	Output is correct
120	Correct	33 ms	10816 KB	Output is correct
121	Correct	29 ms	10448 KB	Output is correct
122	Correct	28 ms	10500 KB	Output is correct
123	Correct	30 ms	10856 KB	Output is correct
124	Correct	2 ms	4948 KB	Output is correct
125	Correct	7 ms	6620 KB	Output is correct
126	Correct	7 ms	6736 KB	Output is correct
127	Correct	8 ms	6608 KB	Output is correct
128	Correct	9 ms	6616 KB	Output is correct
129	Correct	7 ms	6608 KB	Output is correct
130	Correct	9 ms	6224 KB	Output is correct
131	Correct	9 ms	6736 KB	Output is correct
132	Correct	6 ms	6608 KB	Output is correct
133	Incorrect	2 ms	4948 KB	Output isn't correct
134	Halted	0 ms	0 KB	-

답안 #561118

Compilation message

Subtask #1 14.0 / 14.0

Subtask #2 10.0 / 10.0

Subtask #3 23.0 / 23.0

Subtask #4 0 / 18.0

Subtask #5 0 / 12.0

Subtask #6 0 / 23.0

Subtask #1
14.0 / 14.0

Subtask #2
10.0 / 10.0

Subtask #3
23.0 / 23.0

Subtask #4
0 / 18.0

Subtask #5
0 / 12.0

Subtask #6
0 / 23.0