답안 #561117

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
561117	2022-05-12T09:28:57 Z	Zanite	꿈 (IOI13_dreaming)	C++17	47 / 100	108 ms	24876 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();

	chmax(ans, components[s-1] + components[s-2] + L);
	if (s > 2) {
		chmax(ans, components[s-2] + components[s-3] + (L << 1));
	}
	return ans;
}

Subtask #1
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	64 ms	17868 KB	Output is correct
2	Correct	64 ms	18704 KB	Output is correct
3	Correct	43 ms	16132 KB	Output is correct
4	Correct	13 ms	6988 KB	Output is correct
5	Correct	8 ms	6288 KB	Output is correct
6	Correct	17 ms	8112 KB	Output is correct
7	Correct	3 ms	5012 KB	Output is correct
8	Correct	29 ms	10900 KB	Output is correct
9	Correct	40 ms	13824 KB	Output is correct
10	Correct	3 ms	5076 KB	Output is correct
11	Correct	66 ms	15356 KB	Output is correct
12	Correct	68 ms	17176 KB	Output is correct
13	Correct	4 ms	5076 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4948 KB	Output is correct
2	Correct	3 ms	5012 KB	Output is correct
3	Correct	3 ms	4948 KB	Output is correct
4	Correct	3 ms	5012 KB	Output is correct
5	Correct	4 ms	4948 KB	Output is correct
6	Correct	4 ms	4948 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	4 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	5012 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	3 ms	4948 KB	Output is correct
15	Correct	3 ms	5012 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	3 ms	4948 KB	Output is correct
20	Correct	3 ms	5012 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	3 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

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	64 ms	17868 KB	Output is correct
2	Correct	64 ms	18704 KB	Output is correct
3	Correct	43 ms	16132 KB	Output is correct
4	Correct	13 ms	6988 KB	Output is correct
5	Correct	8 ms	6288 KB	Output is correct
6	Correct	17 ms	8112 KB	Output is correct
7	Correct	3 ms	5012 KB	Output is correct
8	Correct	29 ms	10900 KB	Output is correct
9	Correct	40 ms	13824 KB	Output is correct
10	Correct	3 ms	5076 KB	Output is correct
11	Correct	66 ms	15356 KB	Output is correct
12	Correct	68 ms	17176 KB	Output is correct
13	Correct	4 ms	5076 KB	Output is correct
14	Correct	2 ms	4948 KB	Output is correct
15	Correct	3 ms	5012 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	5012 KB	Output is correct
18	Correct	4 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	3 ms	4948 KB	Output is correct
22	Correct	4 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	5012 KB	Output is correct
26	Correct	3 ms	4948 KB	Output is correct
27	Correct	3 ms	4948 KB	Output is correct
28	Correct	3 ms	5012 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	3 ms	4948 KB	Output is correct
33	Correct	3 ms	5012 KB	Output is correct
34	Correct	3 ms	4948 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	86 ms	19076 KB	Output is correct
40	Correct	65 ms	18796 KB	Output is correct
41	Correct	43 ms	16172 KB	Output is correct
42	Correct	9 ms	7104 KB	Output is correct
43	Correct	3 ms	5012 KB	Output is correct
44	Correct	3 ms	4948 KB	Output is correct
45	Correct	3 ms	4948 KB	Output is correct
46	Correct	4 ms	5076 KB	Output is correct
47	Correct	3 ms	5012 KB	Output is correct
48	Correct	3 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	3 ms	4948 KB	Output is correct
55	Correct	3 ms	4948 KB	Output is correct
56	Correct	3 ms	4932 KB	Output is correct
57	Correct	93 ms	16220 KB	Output is correct
58	Correct	108 ms	15984 KB	Output is correct
59	Correct	92 ms	16268 KB	Output is correct
60	Correct	97 ms	16168 KB	Output is correct
61	Correct	100 ms	16588 KB	Output is correct
62	Correct	106 ms	16432 KB	Output is correct
63	Correct	86 ms	16332 KB	Output is correct
64	Correct	94 ms	16320 KB	Output is correct
65	Correct	105 ms	16704 KB	Output is correct
66	Correct	87 ms	16616 KB	Output is correct
67	Correct	101 ms	16276 KB	Output is correct
68	Correct	100 ms	16240 KB	Output is correct
69	Correct	108 ms	16436 KB	Output is correct
70	Correct	90 ms	16328 KB	Output is correct
71	Correct	3 ms	4948 KB	Output is correct
72	Correct	4 ms	5340 KB	Output is correct
73	Correct	4 ms	5320 KB	Output is correct
74	Correct	5 ms	5332 KB	Output is correct
75	Correct	4 ms	5276 KB	Output is correct
76	Correct	5 ms	5320 KB	Output is correct
77	Correct	4 ms	5332 KB	Output is correct
78	Correct	5 ms	5284 KB	Output is correct
79	Correct	6 ms	5320 KB	Output is correct
80	Correct	100 ms	16160 KB	Output is correct
81	Correct	88 ms	16128 KB	Output is correct
82	Correct	86 ms	16504 KB	Output is correct
83	Correct	97 ms	16624 KB	Output is correct
84	Correct	4 ms	5204 KB	Output is correct
85	Correct	4 ms	5280 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	5280 KB	Output is correct
89	Correct	5 ms	5204 KB	Output is correct
90	Correct	4 ms	5204 KB	Output is correct
91	Correct	4 ms	5280 KB	Output is correct
92	Correct	4 ms	5332 KB	Output is correct
93	Correct	5 ms	5268 KB	Output is correct
94	Correct	3 ms	4948 KB	Output is correct
95	Correct	3 ms	5016 KB	Output is correct
96	Correct	4 ms	4948 KB	Output is correct
97	Correct	3 ms	4948 KB	Output is correct
98	Correct	4 ms	5012 KB	Output is correct
99	Correct	3 ms	4944 KB	Output is correct
100	Correct	3 ms	4948 KB	Output is correct
101	Correct	3 ms	5004 KB	Output is correct
102	Correct	3 ms	4948 KB	Output is correct
103	Correct	3 ms	5004 KB	Output is correct
104	Correct	8 ms	6304 KB	Output is correct
105	Correct	15 ms	8096 KB	Output is correct
106	Correct	3 ms	4948 KB	Output is correct
107	Correct	28 ms	10900 KB	Output is correct
108	Correct	49 ms	13952 KB	Output is correct
109	Correct	3 ms	5016 KB	Output is correct
110	Correct	70 ms	15540 KB	Output is correct
111	Correct	71 ms	17096 KB	Output is correct
112	Correct	3 ms	5148 KB	Output is correct
113	Correct	93 ms	24876 KB	Output is correct

Subtask #4
0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	29 ms	10576 KB	Output is correct
2	Correct	36 ms	10668 KB	Output is correct
3	Correct	32 ms	10616 KB	Output is correct
4	Correct	31 ms	10560 KB	Output is correct
5	Correct	31 ms	10620 KB	Output is correct
6	Correct	31 ms	11128 KB	Output is correct
7	Correct	30 ms	10856 KB	Output is correct
8	Correct	28 ms	10448 KB	Output is correct
9	Correct	36 ms	10452 KB	Output is correct
10	Correct	32 ms	10788 KB	Output is correct
11	Correct	2 ms	4948 KB	Output is correct
12	Correct	10 ms	6680 KB	Output is correct
13	Correct	8 ms	6736 KB	Output is correct
14	Correct	10 ms	6608 KB	Output is correct
15	Correct	7 ms	6608 KB	Output is correct
16	Correct	8 ms	6636 KB	Output is correct
17	Correct	6 ms	6224 KB	Output is correct
18	Correct	8 ms	6740 KB	Output is correct
19	Correct	6 ms	6672 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	2 ms	4948 KB	Output is correct
2	Correct	3 ms	5012 KB	Output is correct
3	Correct	3 ms	4948 KB	Output is correct
4	Correct	3 ms	5012 KB	Output is correct
5	Correct	4 ms	4948 KB	Output is correct
6	Correct	4 ms	4948 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	4 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	5012 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	3 ms	4948 KB	Output is correct
15	Correct	3 ms	5012 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	3 ms	4948 KB	Output is correct
20	Correct	3 ms	5012 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	3 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	3 ms	5076 KB	Output is correct
27	Correct	4 ms	5204 KB	Output is correct
28	Correct	4 ms	5332 KB	Output is correct
29	Correct	3 ms	5076 KB	Output is correct
30	Correct	5 ms	5300 KB	Output is correct
31	Correct	6 ms	5312 KB	Output is correct
32	Correct	4 ms	5076 KB	Output is correct
33	Correct	4 ms	5204 KB	Output is correct
34	Correct	4 ms	5280 KB	Output is correct
35	Correct	4 ms	5012 KB	Output is correct
36	Correct	3 ms	5012 KB	Output is correct
37	Correct	3 ms	4948 KB	Output is correct
38	Correct	3 ms	4948 KB	Output is correct
39	Correct	3 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	5024 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	5008 KB	Output is correct
48	Correct	3 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	5008 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	64 ms	17868 KB	Output is correct
2	Correct	64 ms	18704 KB	Output is correct
3	Correct	43 ms	16132 KB	Output is correct
4	Correct	13 ms	6988 KB	Output is correct
5	Correct	8 ms	6288 KB	Output is correct
6	Correct	17 ms	8112 KB	Output is correct
7	Correct	3 ms	5012 KB	Output is correct
8	Correct	29 ms	10900 KB	Output is correct
9	Correct	40 ms	13824 KB	Output is correct
10	Correct	3 ms	5076 KB	Output is correct
11	Correct	66 ms	15356 KB	Output is correct
12	Correct	68 ms	17176 KB	Output is correct
13	Correct	4 ms	5076 KB	Output is correct
14	Correct	2 ms	4948 KB	Output is correct
15	Correct	3 ms	5012 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	5012 KB	Output is correct
18	Correct	4 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	3 ms	4948 KB	Output is correct
22	Correct	4 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	5012 KB	Output is correct
26	Correct	3 ms	4948 KB	Output is correct
27	Correct	3 ms	4948 KB	Output is correct
28	Correct	3 ms	5012 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	3 ms	4948 KB	Output is correct
33	Correct	3 ms	5012 KB	Output is correct
34	Correct	3 ms	4948 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	86 ms	19076 KB	Output is correct
40	Correct	65 ms	18796 KB	Output is correct
41	Correct	43 ms	16172 KB	Output is correct
42	Correct	9 ms	7104 KB	Output is correct
43	Correct	3 ms	5012 KB	Output is correct
44	Correct	3 ms	4948 KB	Output is correct
45	Correct	3 ms	4948 KB	Output is correct
46	Correct	4 ms	5076 KB	Output is correct
47	Correct	3 ms	5012 KB	Output is correct
48	Correct	3 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	3 ms	4948 KB	Output is correct
55	Correct	3 ms	4948 KB	Output is correct
56	Correct	3 ms	4932 KB	Output is correct
57	Correct	93 ms	16220 KB	Output is correct
58	Correct	108 ms	15984 KB	Output is correct
59	Correct	92 ms	16268 KB	Output is correct
60	Correct	97 ms	16168 KB	Output is correct
61	Correct	100 ms	16588 KB	Output is correct
62	Correct	106 ms	16432 KB	Output is correct
63	Correct	86 ms	16332 KB	Output is correct
64	Correct	94 ms	16320 KB	Output is correct
65	Correct	105 ms	16704 KB	Output is correct
66	Correct	87 ms	16616 KB	Output is correct
67	Correct	101 ms	16276 KB	Output is correct
68	Correct	100 ms	16240 KB	Output is correct
69	Correct	108 ms	16436 KB	Output is correct
70	Correct	90 ms	16328 KB	Output is correct
71	Correct	3 ms	4948 KB	Output is correct
72	Correct	4 ms	5340 KB	Output is correct
73	Correct	4 ms	5320 KB	Output is correct
74	Correct	5 ms	5332 KB	Output is correct
75	Correct	4 ms	5276 KB	Output is correct
76	Correct	5 ms	5320 KB	Output is correct
77	Correct	4 ms	5332 KB	Output is correct
78	Correct	5 ms	5284 KB	Output is correct
79	Correct	6 ms	5320 KB	Output is correct
80	Correct	100 ms	16160 KB	Output is correct
81	Correct	88 ms	16128 KB	Output is correct
82	Correct	86 ms	16504 KB	Output is correct
83	Correct	97 ms	16624 KB	Output is correct
84	Correct	4 ms	5204 KB	Output is correct
85	Correct	4 ms	5280 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	5280 KB	Output is correct
89	Correct	5 ms	5204 KB	Output is correct
90	Correct	4 ms	5204 KB	Output is correct
91	Correct	4 ms	5280 KB	Output is correct
92	Correct	4 ms	5332 KB	Output is correct
93	Correct	5 ms	5268 KB	Output is correct
94	Correct	3 ms	4948 KB	Output is correct
95	Correct	3 ms	5016 KB	Output is correct
96	Correct	4 ms	4948 KB	Output is correct
97	Correct	3 ms	4948 KB	Output is correct
98	Correct	4 ms	5012 KB	Output is correct
99	Correct	3 ms	4944 KB	Output is correct
100	Correct	3 ms	4948 KB	Output is correct
101	Correct	3 ms	5004 KB	Output is correct
102	Correct	3 ms	4948 KB	Output is correct
103	Correct	3 ms	5004 KB	Output is correct
104	Correct	8 ms	6304 KB	Output is correct
105	Correct	15 ms	8096 KB	Output is correct
106	Correct	3 ms	4948 KB	Output is correct
107	Correct	28 ms	10900 KB	Output is correct
108	Correct	49 ms	13952 KB	Output is correct
109	Correct	3 ms	5016 KB	Output is correct
110	Correct	70 ms	15540 KB	Output is correct
111	Correct	71 ms	17096 KB	Output is correct
112	Correct	3 ms	5148 KB	Output is correct
113	Correct	93 ms	24876 KB	Output is correct
114	Correct	29 ms	10576 KB	Output is correct
115	Correct	36 ms	10668 KB	Output is correct
116	Correct	32 ms	10616 KB	Output is correct
117	Correct	31 ms	10560 KB	Output is correct
118	Correct	31 ms	10620 KB	Output is correct
119	Correct	31 ms	11128 KB	Output is correct
120	Correct	30 ms	10856 KB	Output is correct
121	Correct	28 ms	10448 KB	Output is correct
122	Correct	36 ms	10452 KB	Output is correct
123	Correct	32 ms	10788 KB	Output is correct
124	Correct	2 ms	4948 KB	Output is correct
125	Correct	10 ms	6680 KB	Output is correct
126	Correct	8 ms	6736 KB	Output is correct
127	Correct	10 ms	6608 KB	Output is correct
128	Correct	7 ms	6608 KB	Output is correct
129	Correct	8 ms	6636 KB	Output is correct
130	Correct	6 ms	6224 KB	Output is correct
131	Correct	8 ms	6740 KB	Output is correct
132	Correct	6 ms	6672 KB	Output is correct
133	Incorrect	2 ms	4948 KB	Output isn't correct
134	Halted	0 ms	0 KB	-

답안 #561117

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