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답안 #251284

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
251284 2020-07-20T16:47:22 Z AaronNaidu 꿈 (IOI13_dreaming) C++14
47 / 100
 103 ms 13688 KB 
#include <bits/stdc++.h>
#include "dreaming.h"
using namespace std;

vector<pair<int, int>> graph[100001];
vector<int> componentSums;
int dists[100001];
bool visited[100001];
int maxWithinDist = 0;
int maxDist = 0;
int maxNode = 0;

void dfs(int node, int parent, int dist) {
    dists[node] = dist;
    if (dist > maxDist)
    {
        maxWithinDist = max(maxWithinDist, dist);
        maxDist = dist;
        maxNode = node;
    }
    for (auto i : graph[node])
    {
        if (i.first != parent)
        {
            dfs(i.first, node, dist + i.second);
        }
    }
    visited[node] = true;
}

int travelTime(int n, int m, int l, int a[], int b[], int t[]) {
    for (int i = 0; i < m; i++)
    {
        graph[a[i]].push_back({b[i],t[i]});
        graph[b[i]].push_back({a[i], t[i]});
    }
    int start2 = 0;
    for (int i = 0; i < n; i++)
    {
        if (!visited[i])
        {
            maxDist = 0;
            maxNode = start2;
            dfs(start2, -1, 0);
            //cout << "Done dfs3 landed on " << maxNode << "\n";
            int dfsFrom = maxNode;
            maxDist = 0;
            maxNode = dfsFrom;
            dfs(dfsFrom, -1, 0);
            //cout << "Done dfs4 landed on " << maxNode << "\n";
            int currDist = maxDist;
            int prevCurrDist = currDist;
            int currNode = maxNode;
            while (float(currDist) > maxDist/float(2))
            {
                for (auto i : graph[currNode])
                {
                    if (dists[i.first] < dists[currNode])
                    {
                        currNode = i.first;
                        prevCurrDist = currDist;
                        currDist = dists[currNode];
                        break;
                    }
                }
            }
            int ans2 = min(max(currDist, maxDist - currDist), max(prevCurrDist, maxDist - prevCurrDist));
            componentSums.push_back(ans2);
        }
        start2++;
    }
    sort(componentSums.begin(), componentSums.end());
    if (componentSums.size() == 1)
    {
        return maxWithinDist;
    }
    if (componentSums.size() == 2)
    {
        return max(maxWithinDist, l + componentSums[0] + componentSums[1]);
    }
    
    //cout << "Ans 1 is " << ans1 << "\n";
    //cout << "Ans 2 is " << ans2 << "\n";
    return max(maxWithinDist, max(componentSums[0] + componentSums[1] + l, componentSums[1] + componentSums[2] + 2*l));
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 12792 KB Output is correct
2 Correct 64 ms 12664 KB Output is correct
3 Correct 36 ms 9340 KB Output is correct
4 Correct 10 ms 4096 KB Output is correct
5 Correct 7 ms 3456 KB Output is correct
6 Correct 14 ms 4892 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 28 ms 6136 KB Output is correct
9 Correct 43 ms 7544 KB Output is correct
10 Correct 2 ms 2688 KB Output is correct
11 Correct 77 ms 8956 KB Output is correct
12 Correct 60 ms 10872 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 12792 KB Output is correct
2 Correct 64 ms 12664 KB Output is correct
3 Correct 36 ms 9340 KB Output is correct
4 Correct 10 ms 4096 KB Output is correct
5 Correct 7 ms 3456 KB Output is correct
6 Correct 14 ms 4892 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 28 ms 6136 KB Output is correct
9 Correct 43 ms 7544 KB Output is correct
10 Correct 2 ms 2688 KB Output is correct
11 Correct 77 ms 8956 KB Output is correct
12 Correct 60 ms 10872 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 2 ms 2688 KB Output is correct
16 Correct 2 ms 2688 KB Output is correct
17 Correct 2 ms 2688 KB Output is correct
18 Correct 2 ms 2688 KB Output is correct
19 Correct 2 ms 2688 KB Output is correct
20 Correct 2 ms 2688 KB Output is correct
21 Correct 2 ms 2688 KB Output is correct
22 Correct 2 ms 2688 KB Output is correct
23 Correct 2 ms 2688 KB Output is correct
24 Correct 2 ms 2688 KB Output is correct
25 Correct 2 ms 2688 KB Output is correct
26 Correct 2 ms 2688 KB Output is correct
27 Correct 2 ms 2688 KB Output is correct
28 Correct 2 ms 2688 KB Output is correct
29 Correct 2 ms 2688 KB Output is correct
30 Correct 2 ms 2688 KB Output is correct
31 Correct 2 ms 2688 KB Output is correct
32 Correct 3 ms 2688 KB Output is correct
33 Correct 2 ms 2688 KB Output is correct
34 Correct 2 ms 2688 KB Output is correct
35 Correct 2 ms 2688 KB Output is correct
36 Correct 2 ms 2688 KB Output is correct
37 Correct 2 ms 2688 KB Output is correct
38 Correct 2 ms 2688 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 12792 KB Output is correct
2 Correct 64 ms 12664 KB Output is correct
3 Correct 36 ms 9340 KB Output is correct
4 Correct 10 ms 4096 KB Output is correct
5 Correct 7 ms 3456 KB Output is correct
6 Correct 14 ms 4892 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 28 ms 6136 KB Output is correct
9 Correct 43 ms 7544 KB Output is correct
10 Correct 2 ms 2688 KB Output is correct
11 Correct 77 ms 8956 KB Output is correct
12 Correct 60 ms 10872 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 2 ms 2688 KB Output is correct
16 Correct 2 ms 2688 KB Output is correct
17 Correct 2 ms 2688 KB Output is correct
18 Correct 2 ms 2688 KB Output is correct
19 Correct 2 ms 2688 KB Output is correct
20 Correct 2 ms 2688 KB Output is correct
21 Correct 2 ms 2688 KB Output is correct
22 Correct 2 ms 2688 KB Output is correct
23 Correct 2 ms 2688 KB Output is correct
24 Correct 2 ms 2688 KB Output is correct
25 Correct 2 ms 2688 KB Output is correct
26 Correct 2 ms 2688 KB Output is correct
27 Correct 2 ms 2688 KB Output is correct
28 Correct 2 ms 2688 KB Output is correct
29 Correct 2 ms 2688 KB Output is correct
30 Correct 2 ms 2688 KB Output is correct
31 Correct 2 ms 2688 KB Output is correct
32 Correct 3 ms 2688 KB Output is correct
33 Correct 2 ms 2688 KB Output is correct
34 Correct 2 ms 2688 KB Output is correct
35 Correct 2 ms 2688 KB Output is correct
36 Correct 2 ms 2688 KB Output is correct
37 Correct 2 ms 2688 KB Output is correct
38 Correct 2 ms 2688 KB Output is correct
39 Correct 72 ms 12792 KB Output is correct
40 Correct 54 ms 12664 KB Output is correct
41 Correct 38 ms 9336 KB Output is correct
42 Correct 9 ms 4096 KB Output is correct
43 Correct 2 ms 2688 KB Output is correct
44 Correct 2 ms 2688 KB Output is correct
45 Correct 2 ms 2688 KB Output is correct
46 Correct 2 ms 2688 KB Output is correct
47 Correct 3 ms 2688 KB Output is correct
48 Correct 2 ms 2688 KB Output is correct
49 Correct 2 ms 2688 KB Output is correct
50 Correct 2 ms 2688 KB Output is correct
51 Correct 2 ms 2688 KB Output is correct
52 Correct 2 ms 2688 KB Output is correct
53 Correct 2 ms 2688 KB Output is correct
54 Correct 2 ms 2688 KB Output is correct
55 Correct 2 ms 2688 KB Output is correct
56 Correct 2 ms 2688 KB Output is correct
57 Correct 68 ms 8312 KB Output is correct
58 Correct 69 ms 8312 KB Output is correct
59 Correct 76 ms 8312 KB Output is correct
60 Correct 69 ms 8312 KB Output is correct
61 Correct 65 ms 8184 KB Output is correct
62 Correct 66 ms 8184 KB Output is correct
63 Correct 65 ms 7928 KB Output is correct
64 Correct 64 ms 7960 KB Output is correct
65 Correct 77 ms 8056 KB Output is correct
66 Correct 90 ms 7928 KB Output is correct
67 Correct 99 ms 8184 KB Output is correct
68 Correct 87 ms 8312 KB Output is correct
69 Correct 89 ms 8312 KB Output is correct
70 Correct 75 ms 8184 KB Output is correct
71 Correct 2 ms 2688 KB Output is correct
72 Correct 6 ms 2816 KB Output is correct
73 Correct 3 ms 2816 KB Output is correct
74 Correct 6 ms 2816 KB Output is correct
75 Correct 4 ms 2816 KB Output is correct
76 Correct 4 ms 2816 KB Output is correct
77 Correct 4 ms 2816 KB Output is correct
78 Correct 4 ms 2816 KB Output is correct
79 Correct 4 ms 2816 KB Output is correct
80 Correct 100 ms 8184 KB Output is correct
81 Correct 96 ms 8184 KB Output is correct
82 Correct 91 ms 8184 KB Output is correct
83 Correct 103 ms 8184 KB Output is correct
84 Correct 3 ms 2816 KB Output is correct
85 Correct 2 ms 2816 KB Output is correct
86 Correct 3 ms 2816 KB Output is correct
87 Correct 3 ms 2816 KB Output is correct
88 Correct 5 ms 2816 KB Output is correct
89 Correct 3 ms 2816 KB Output is correct
90 Correct 4 ms 2816 KB Output is correct
91 Correct 3 ms 2816 KB Output is correct
92 Correct 3 ms 2816 KB Output is correct
93 Correct 3 ms 2816 KB Output is correct
94 Correct 2 ms 2688 KB Output is correct
95 Correct 3 ms 2688 KB Output is correct
96 Correct 2 ms 2688 KB Output is correct
97 Correct 2 ms 2688 KB Output is correct
98 Correct 2 ms 2688 KB Output is correct
99 Correct 1 ms 2688 KB Output is correct
100 Correct 2 ms 2688 KB Output is correct
101 Correct 2 ms 2688 KB Output is correct
102 Correct 2 ms 2688 KB Output is correct
103 Correct 2 ms 2688 KB Output is correct
104 Correct 8 ms 3456 KB Output is correct
105 Correct 15 ms 4864 KB Output is correct
106 Correct 2 ms 2688 KB Output is correct
107 Correct 28 ms 6144 KB Output is correct
108 Correct 36 ms 7612 KB Output is correct
109 Correct 2 ms 2688 KB Output is correct
110 Correct 74 ms 9036 KB Output is correct
111 Correct 64 ms 10872 KB Output is correct
112 Correct 2 ms 2816 KB Output is correct
113 Correct 91 ms 13688 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 22 ms 5880 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 12792 KB Output is correct
2 Correct 64 ms 12664 KB Output is correct
3 Correct 36 ms 9340 KB Output is correct
4 Correct 10 ms 4096 KB Output is correct
5 Correct 7 ms 3456 KB Output is correct
6 Correct 14 ms 4892 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 28 ms 6136 KB Output is correct
9 Correct 43 ms 7544 KB Output is correct
10 Correct 2 ms 2688 KB Output is correct
11 Correct 77 ms 8956 KB Output is correct
12 Correct 60 ms 10872 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 2 ms 2816 KB Output is correct
16 Correct 3 ms 2816 KB Output is correct
17 Incorrect 2 ms 2688 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 12792 KB Output is correct
2 Correct 64 ms 12664 KB Output is correct
3 Correct 36 ms 9340 KB Output is correct
4 Correct 10 ms 4096 KB Output is correct
5 Correct 7 ms 3456 KB Output is correct
6 Correct 14 ms 4892 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 28 ms 6136 KB Output is correct
9 Correct 43 ms 7544 KB Output is correct
10 Correct 2 ms 2688 KB Output is correct
11 Correct 77 ms 8956 KB Output is correct
12 Correct 60 ms 10872 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 2 ms 2688 KB Output is correct
16 Correct 2 ms 2688 KB Output is correct
17 Correct 2 ms 2688 KB Output is correct
18 Correct 2 ms 2688 KB Output is correct
19 Correct 2 ms 2688 KB Output is correct
20 Correct 2 ms 2688 KB Output is correct
21 Correct 2 ms 2688 KB Output is correct
22 Correct 2 ms 2688 KB Output is correct
23 Correct 2 ms 2688 KB Output is correct
24 Correct 2 ms 2688 KB Output is correct
25 Correct 2 ms 2688 KB Output is correct
26 Correct 2 ms 2688 KB Output is correct
27 Correct 2 ms 2688 KB Output is correct
28 Correct 2 ms 2688 KB Output is correct
29 Correct 2 ms 2688 KB Output is correct
30 Correct 2 ms 2688 KB Output is correct
31 Correct 2 ms 2688 KB Output is correct
32 Correct 3 ms 2688 KB Output is correct
33 Correct 2 ms 2688 KB Output is correct
34 Correct 2 ms 2688 KB Output is correct
35 Correct 2 ms 2688 KB Output is correct
36 Correct 2 ms 2688 KB Output is correct
37 Correct 2 ms 2688 KB Output is correct
38 Correct 2 ms 2688 KB Output is correct
39 Correct 72 ms 12792 KB Output is correct
40 Correct 54 ms 12664 KB Output is correct
41 Correct 38 ms 9336 KB Output is correct
42 Correct 9 ms 4096 KB Output is correct
43 Correct 2 ms 2688 KB Output is correct
44 Correct 2 ms 2688 KB Output is correct
45 Correct 2 ms 2688 KB Output is correct
46 Correct 2 ms 2688 KB Output is correct
47 Correct 3 ms 2688 KB Output is correct
48 Correct 2 ms 2688 KB Output is correct
49 Correct 2 ms 2688 KB Output is correct
50 Correct 2 ms 2688 KB Output is correct
51 Correct 2 ms 2688 KB Output is correct
52 Correct 2 ms 2688 KB Output is correct
53 Correct 2 ms 2688 KB Output is correct
54 Correct 2 ms 2688 KB Output is correct
55 Correct 2 ms 2688 KB Output is correct
56 Correct 2 ms 2688 KB Output is correct
57 Correct 68 ms 8312 KB Output is correct
58 Correct 69 ms 8312 KB Output is correct
59 Correct 76 ms 8312 KB Output is correct
60 Correct 69 ms 8312 KB Output is correct
61 Correct 65 ms 8184 KB Output is correct
62 Correct 66 ms 8184 KB Output is correct
63 Correct 65 ms 7928 KB Output is correct
64 Correct 64 ms 7960 KB Output is correct
65 Correct 77 ms 8056 KB Output is correct
66 Correct 90 ms 7928 KB Output is correct
67 Correct 99 ms 8184 KB Output is correct
68 Correct 87 ms 8312 KB Output is correct
69 Correct 89 ms 8312 KB Output is correct
70 Correct 75 ms 8184 KB Output is correct
71 Correct 2 ms 2688 KB Output is correct
72 Correct 6 ms 2816 KB Output is correct
73 Correct 3 ms 2816 KB Output is correct
74 Correct 6 ms 2816 KB Output is correct
75 Correct 4 ms 2816 KB Output is correct
76 Correct 4 ms 2816 KB Output is correct
77 Correct 4 ms 2816 KB Output is correct
78 Correct 4 ms 2816 KB Output is correct
79 Correct 4 ms 2816 KB Output is correct
80 Correct 100 ms 8184 KB Output is correct
81 Correct 96 ms 8184 KB Output is correct
82 Correct 91 ms 8184 KB Output is correct
83 Correct 103 ms 8184 KB Output is correct
84 Correct 3 ms 2816 KB Output is correct
85 Correct 2 ms 2816 KB Output is correct
86 Correct 3 ms 2816 KB Output is correct
87 Correct 3 ms 2816 KB Output is correct
88 Correct 5 ms 2816 KB Output is correct
89 Correct 3 ms 2816 KB Output is correct
90 Correct 4 ms 2816 KB Output is correct
91 Correct 3 ms 2816 KB Output is correct
92 Correct 3 ms 2816 KB Output is correct
93 Correct 3 ms 2816 KB Output is correct
94 Correct 2 ms 2688 KB Output is correct
95 Correct 3 ms 2688 KB Output is correct
96 Correct 2 ms 2688 KB Output is correct
97 Correct 2 ms 2688 KB Output is correct
98 Correct 2 ms 2688 KB Output is correct
99 Correct 1 ms 2688 KB Output is correct
100 Correct 2 ms 2688 KB Output is correct
101 Correct 2 ms 2688 KB Output is correct
102 Correct 2 ms 2688 KB Output is correct
103 Correct 2 ms 2688 KB Output is correct
104 Correct 8 ms 3456 KB Output is correct
105 Correct 15 ms 4864 KB Output is correct
106 Correct 2 ms 2688 KB Output is correct
107 Correct 28 ms 6144 KB Output is correct
108 Correct 36 ms 7612 KB Output is correct
109 Correct 2 ms 2688 KB Output is correct
110 Correct 74 ms 9036 KB Output is correct
111 Correct 64 ms 10872 KB Output is correct
112 Correct 2 ms 2816 KB Output is correct
113 Correct 91 ms 13688 KB Output is correct
114 Incorrect 22 ms 5880 KB Output isn't correct
115 Halted 0 ms 0 KB -