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Submission #336008

# Submission time Handle Problem Language Result Execution time Memory
336008 2020-12-14T13:21:15 Z blue Dreaming (IOI13_dreaming) C++11
47 / 100
 211 ms 16072 KB 
#include "dreaming.h"
#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
#include <queue>
using namespace std;

vector<int> edge[100001];
vector<int> weight[100001];
vector<int> edge_size(1e5 + 1, 0);
vector<int> maxdist(1e5 + 1, 0);
vector<int> visit(1e5 + 1, 0);
vector<int> roots;

struct distcomp
{
    int i;
};

bool operator < (distcomp A, distcomp B)
{
    if(maxdist[A.i] == maxdist[B.i]) return A.i < B.i;
    return maxdist[A.i] < maxdist[B.i];
}

int travelTime(int N, int M, int L, int A[], int B[], int T[])
{
    for(int i = 0; i < M; i++)
    {
        edge[A[i]].push_back(B[i]);
        weight[A[i]].push_back(T[i]);
        edge_size[A[i]]++;

        edge[B[i]].push_back(A[i]);
        weight[B[i]].push_back(T[i]);
        edge_size[B[i]]++;
    }


    set<distcomp> tbv;
    for(int i = 0; i < N; i++)
    {
        if(edge_size[i] == 1) tbv.insert(distcomp{i});
    }

    int u, v, w;
    int flag;

    vector<bool> inserted(1e5+1);
    
    while(!tbv.empty())
    {
        u = tbv.begin()->i;
        tbv.erase(tbv.begin());
        visit[u] = 1;

        for(int i = 0; i < edge[u].size(); i++)
        {
            v = edge[u][i];
            w = weight[u][i];

            if(visit[v]) continue;
            edge_size[v]--;
            flag = (tbv.find(distcomp{v}) == tbv.end());
            if(flag) maxdist[v] = max(maxdist[v], maxdist[u] + w);
            else
            {
                tbv.erase(distcomp{v});
                maxdist[v] = max(maxdist[v], maxdist[u] + w);
                tbv.insert(distcomp{v});
            }
            if(edge_size[v] <= 1 && !inserted[v])
            {
                tbv.insert(distcomp{v});
                inserted[v] = 1;
            }
        }
    }

    for(int i = 0; i < N; i++) if(edge_size[i] == 0)
    {
        roots.push_back(i);
    }

    int res = 0;
    int max1, max2;
    for(int r: roots)
    {
        max1 = max2 = 0;
        for(int i = 0; i < edge[r].size(); i++)
        {
            v = edge[r][i];
            w = weight[r][i];

            if(maxdist[v] + w >= max1)
            {
                max2 = max1;
                max1 = maxdist[v] + w;
            }
            else if(maxdist[v] + w >= max2) max2 = maxdist[v] + w;
        }
        res = max(res, max1 + max2);
    }

    for(int i = 0; i < roots.size(); i++) roots[i] = maxdist[roots[i]] * -1;
    sort(roots.begin(), roots.end());

    if(roots.size() >= 2) res = max(res, L - roots[0] - roots[1]);
    if(roots.size() >= 3) res = max(res, 2*L - roots[1] - roots[1]);

    return res;
}

Compilation message

dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:58:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         for(int i = 0; i < edge[u].size(); i++)
      |                        ~~^~~~~~~~~~~~~~~~
dreaming.cpp:91:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |         for(int i = 0; i < edge[r].size(); i++)
      |                        ~~^~~~~~~~~~~~~~~~
dreaming.cpp:106:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  106 |     for(int i = 0; i < roots.size(); i++) roots[i] = maxdist[roots[i]] * -1;
      |                    ~~^~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 13036 KB Output is correct
2 Correct 88 ms 12908 KB Output is correct
3 Correct 56 ms 10604 KB Output is correct
4 Correct 18 ms 7148 KB Output is correct
5 Correct 11 ms 6892 KB Output is correct
6 Correct 19 ms 7660 KB Output is correct
7 Correct 5 ms 6252 KB Output is correct
8 Correct 38 ms 9196 KB Output is correct
9 Correct 53 ms 9964 KB Output is correct
10 Correct 5 ms 6252 KB Output is correct
11 Correct 89 ms 11372 KB Output is correct
12 Correct 106 ms 12140 KB Output is correct
13 Correct 5 ms 6252 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 13036 KB Output is correct
2 Correct 88 ms 12908 KB Output is correct
3 Correct 56 ms 10604 KB Output is correct
4 Correct 18 ms 7148 KB Output is correct
5 Correct 11 ms 6892 KB Output is correct
6 Correct 19 ms 7660 KB Output is correct
7 Correct 5 ms 6252 KB Output is correct
8 Correct 38 ms 9196 KB Output is correct
9 Correct 53 ms 9964 KB Output is correct
10 Correct 5 ms 6252 KB Output is correct
11 Correct 89 ms 11372 KB Output is correct
12 Correct 106 ms 12140 KB Output is correct
13 Correct 5 ms 6252 KB Output is correct
14 Correct 4 ms 6252 KB Output is correct
15 Correct 4 ms 6252 KB Output is correct
16 Correct 4 ms 6252 KB Output is correct
17 Correct 5 ms 6252 KB Output is correct
18 Correct 5 ms 6252 KB Output is correct
19 Correct 5 ms 6252 KB Output is correct
20 Correct 5 ms 6252 KB Output is correct
21 Correct 5 ms 6252 KB Output is correct
22 Correct 5 ms 6252 KB Output is correct
23 Correct 5 ms 6252 KB Output is correct
24 Correct 5 ms 6252 KB Output is correct
25 Correct 5 ms 6252 KB Output is correct
26 Correct 4 ms 6252 KB Output is correct
27 Correct 5 ms 6252 KB Output is correct
28 Correct 4 ms 6252 KB Output is correct
29 Correct 5 ms 6252 KB Output is correct
30 Correct 5 ms 6252 KB Output is correct
31 Correct 5 ms 6256 KB Output is correct
32 Correct 5 ms 6252 KB Output is correct
33 Correct 5 ms 6252 KB Output is correct
34 Correct 5 ms 6252 KB Output is correct
35 Correct 5 ms 6252 KB Output is correct
36 Correct 5 ms 6252 KB Output is correct
37 Correct 5 ms 6252 KB Output is correct
38 Correct 5 ms 6252 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 13036 KB Output is correct
2 Correct 88 ms 12908 KB Output is correct
3 Correct 56 ms 10604 KB Output is correct
4 Correct 18 ms 7148 KB Output is correct
5 Correct 11 ms 6892 KB Output is correct
6 Correct 19 ms 7660 KB Output is correct
7 Correct 5 ms 6252 KB Output is correct
8 Correct 38 ms 9196 KB Output is correct
9 Correct 53 ms 9964 KB Output is correct
10 Correct 5 ms 6252 KB Output is correct
11 Correct 89 ms 11372 KB Output is correct
12 Correct 106 ms 12140 KB Output is correct
13 Correct 5 ms 6252 KB Output is correct
14 Correct 4 ms 6252 KB Output is correct
15 Correct 4 ms 6252 KB Output is correct
16 Correct 4 ms 6252 KB Output is correct
17 Correct 5 ms 6252 KB Output is correct
18 Correct 5 ms 6252 KB Output is correct
19 Correct 5 ms 6252 KB Output is correct
20 Correct 5 ms 6252 KB Output is correct
21 Correct 5 ms 6252 KB Output is correct
22 Correct 5 ms 6252 KB Output is correct
23 Correct 5 ms 6252 KB Output is correct
24 Correct 5 ms 6252 KB Output is correct
25 Correct 5 ms 6252 KB Output is correct
26 Correct 4 ms 6252 KB Output is correct
27 Correct 5 ms 6252 KB Output is correct
28 Correct 4 ms 6252 KB Output is correct
29 Correct 5 ms 6252 KB Output is correct
30 Correct 5 ms 6252 KB Output is correct
31 Correct 5 ms 6256 KB Output is correct
32 Correct 5 ms 6252 KB Output is correct
33 Correct 5 ms 6252 KB Output is correct
34 Correct 5 ms 6252 KB Output is correct
35 Correct 5 ms 6252 KB Output is correct
36 Correct 5 ms 6252 KB Output is correct
37 Correct 5 ms 6252 KB Output is correct
38 Correct 5 ms 6252 KB Output is correct
39 Correct 93 ms 13036 KB Output is correct
40 Correct 92 ms 13036 KB Output is correct
41 Correct 56 ms 10604 KB Output is correct
42 Correct 15 ms 7148 KB Output is correct
43 Correct 5 ms 6252 KB Output is correct
44 Correct 5 ms 6252 KB Output is correct
45 Correct 4 ms 6252 KB Output is correct
46 Correct 5 ms 6252 KB Output is correct
47 Correct 5 ms 6252 KB Output is correct
48 Correct 5 ms 6252 KB Output is correct
49 Correct 5 ms 6252 KB Output is correct
50 Correct 5 ms 6272 KB Output is correct
51 Correct 5 ms 6264 KB Output is correct
52 Correct 5 ms 6252 KB Output is correct
53 Correct 4 ms 6252 KB Output is correct
54 Correct 4 ms 6252 KB Output is correct
55 Correct 4 ms 6252 KB Output is correct
56 Correct 4 ms 6252 KB Output is correct
57 Correct 176 ms 14956 KB Output is correct
58 Correct 181 ms 15084 KB Output is correct
59 Correct 190 ms 15340 KB Output is correct
60 Correct 177 ms 15212 KB Output is correct
61 Correct 197 ms 15980 KB Output is correct
62 Correct 197 ms 16072 KB Output is correct
63 Correct 199 ms 15852 KB Output is correct
64 Correct 195 ms 15852 KB Output is correct
65 Correct 197 ms 15852 KB Output is correct
66 Correct 196 ms 15980 KB Output is correct
67 Correct 182 ms 15296 KB Output is correct
68 Correct 182 ms 15212 KB Output is correct
69 Correct 192 ms 15340 KB Output is correct
70 Correct 211 ms 15296 KB Output is correct
71 Correct 5 ms 6252 KB Output is correct
72 Correct 7 ms 6508 KB Output is correct
73 Correct 7 ms 6508 KB Output is correct
74 Correct 7 ms 6508 KB Output is correct
75 Correct 7 ms 6508 KB Output is correct
76 Correct 7 ms 6508 KB Output is correct
77 Correct 7 ms 6508 KB Output is correct
78 Correct 7 ms 6508 KB Output is correct
79 Correct 7 ms 6508 KB Output is correct
80 Correct 204 ms 15212 KB Output is correct
81 Correct 189 ms 15340 KB Output is correct
82 Correct 191 ms 15980 KB Output is correct
83 Correct 192 ms 15980 KB Output is correct
84 Correct 7 ms 6508 KB Output is correct
85 Correct 6 ms 6508 KB Output is correct
86 Correct 6 ms 6508 KB Output is correct
87 Correct 6 ms 6380 KB Output is correct
88 Correct 7 ms 6508 KB Output is correct
89 Correct 7 ms 6508 KB Output is correct
90 Correct 7 ms 6508 KB Output is correct
91 Correct 7 ms 6508 KB Output is correct
92 Correct 7 ms 6508 KB Output is correct
93 Correct 7 ms 6508 KB Output is correct
94 Correct 5 ms 6252 KB Output is correct
95 Correct 5 ms 6252 KB Output is correct
96 Correct 5 ms 6252 KB Output is correct
97 Correct 4 ms 6252 KB Output is correct
98 Correct 5 ms 6252 KB Output is correct
99 Correct 6 ms 6252 KB Output is correct
100 Correct 5 ms 6252 KB Output is correct
101 Correct 5 ms 6252 KB Output is correct
102 Correct 5 ms 6252 KB Output is correct
103 Correct 6 ms 6252 KB Output is correct
104 Correct 13 ms 6892 KB Output is correct
105 Correct 19 ms 7660 KB Output is correct
106 Correct 5 ms 6252 KB Output is correct
107 Correct 40 ms 9196 KB Output is correct
108 Correct 52 ms 9964 KB Output is correct
109 Correct 5 ms 6252 KB Output is correct
110 Correct 86 ms 11372 KB Output is correct
111 Correct 104 ms 12140 KB Output is correct
112 Correct 5 ms 6252 KB Output is correct
113 Correct 153 ms 13676 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 13420 KB Output is correct
2 Incorrect 106 ms 13548 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 13036 KB Output is correct
2 Correct 88 ms 12908 KB Output is correct
3 Correct 56 ms 10604 KB Output is correct
4 Correct 18 ms 7148 KB Output is correct
5 Correct 11 ms 6892 KB Output is correct
6 Correct 19 ms 7660 KB Output is correct
7 Correct 5 ms 6252 KB Output is correct
8 Correct 38 ms 9196 KB Output is correct
9 Correct 53 ms 9964 KB Output is correct
10 Correct 5 ms 6252 KB Output is correct
11 Correct 89 ms 11372 KB Output is correct
12 Correct 106 ms 12140 KB Output is correct
13 Correct 5 ms 6252 KB Output is correct
14 Correct 5 ms 6252 KB Output is correct
15 Correct 6 ms 6380 KB Output is correct
16 Correct 7 ms 6508 KB Output is correct
17 Incorrect 5 ms 6252 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 13036 KB Output is correct
2 Correct 88 ms 12908 KB Output is correct
3 Correct 56 ms 10604 KB Output is correct
4 Correct 18 ms 7148 KB Output is correct
5 Correct 11 ms 6892 KB Output is correct
6 Correct 19 ms 7660 KB Output is correct
7 Correct 5 ms 6252 KB Output is correct
8 Correct 38 ms 9196 KB Output is correct
9 Correct 53 ms 9964 KB Output is correct
10 Correct 5 ms 6252 KB Output is correct
11 Correct 89 ms 11372 KB Output is correct
12 Correct 106 ms 12140 KB Output is correct
13 Correct 5 ms 6252 KB Output is correct
14 Correct 4 ms 6252 KB Output is correct
15 Correct 4 ms 6252 KB Output is correct
16 Correct 4 ms 6252 KB Output is correct
17 Correct 5 ms 6252 KB Output is correct
18 Correct 5 ms 6252 KB Output is correct
19 Correct 5 ms 6252 KB Output is correct
20 Correct 5 ms 6252 KB Output is correct
21 Correct 5 ms 6252 KB Output is correct
22 Correct 5 ms 6252 KB Output is correct
23 Correct 5 ms 6252 KB Output is correct
24 Correct 5 ms 6252 KB Output is correct
25 Correct 5 ms 6252 KB Output is correct
26 Correct 4 ms 6252 KB Output is correct
27 Correct 5 ms 6252 KB Output is correct
28 Correct 4 ms 6252 KB Output is correct
29 Correct 5 ms 6252 KB Output is correct
30 Correct 5 ms 6252 KB Output is correct
31 Correct 5 ms 6256 KB Output is correct
32 Correct 5 ms 6252 KB Output is correct
33 Correct 5 ms 6252 KB Output is correct
34 Correct 5 ms 6252 KB Output is correct
35 Correct 5 ms 6252 KB Output is correct
36 Correct 5 ms 6252 KB Output is correct
37 Correct 5 ms 6252 KB Output is correct
38 Correct 5 ms 6252 KB Output is correct
39 Correct 93 ms 13036 KB Output is correct
40 Correct 92 ms 13036 KB Output is correct
41 Correct 56 ms 10604 KB Output is correct
42 Correct 15 ms 7148 KB Output is correct
43 Correct 5 ms 6252 KB Output is correct
44 Correct 5 ms 6252 KB Output is correct
45 Correct 4 ms 6252 KB Output is correct
46 Correct 5 ms 6252 KB Output is correct
47 Correct 5 ms 6252 KB Output is correct
48 Correct 5 ms 6252 KB Output is correct
49 Correct 5 ms 6252 KB Output is correct
50 Correct 5 ms 6272 KB Output is correct
51 Correct 5 ms 6264 KB Output is correct
52 Correct 5 ms 6252 KB Output is correct
53 Correct 4 ms 6252 KB Output is correct
54 Correct 4 ms 6252 KB Output is correct
55 Correct 4 ms 6252 KB Output is correct
56 Correct 4 ms 6252 KB Output is correct
57 Correct 176 ms 14956 KB Output is correct
58 Correct 181 ms 15084 KB Output is correct
59 Correct 190 ms 15340 KB Output is correct
60 Correct 177 ms 15212 KB Output is correct
61 Correct 197 ms 15980 KB Output is correct
62 Correct 197 ms 16072 KB Output is correct
63 Correct 199 ms 15852 KB Output is correct
64 Correct 195 ms 15852 KB Output is correct
65 Correct 197 ms 15852 KB Output is correct
66 Correct 196 ms 15980 KB Output is correct
67 Correct 182 ms 15296 KB Output is correct
68 Correct 182 ms 15212 KB Output is correct
69 Correct 192 ms 15340 KB Output is correct
70 Correct 211 ms 15296 KB Output is correct
71 Correct 5 ms 6252 KB Output is correct
72 Correct 7 ms 6508 KB Output is correct
73 Correct 7 ms 6508 KB Output is correct
74 Correct 7 ms 6508 KB Output is correct
75 Correct 7 ms 6508 KB Output is correct
76 Correct 7 ms 6508 KB Output is correct
77 Correct 7 ms 6508 KB Output is correct
78 Correct 7 ms 6508 KB Output is correct
79 Correct 7 ms 6508 KB Output is correct
80 Correct 204 ms 15212 KB Output is correct
81 Correct 189 ms 15340 KB Output is correct
82 Correct 191 ms 15980 KB Output is correct
83 Correct 192 ms 15980 KB Output is correct
84 Correct 7 ms 6508 KB Output is correct
85 Correct 6 ms 6508 KB Output is correct
86 Correct 6 ms 6508 KB Output is correct
87 Correct 6 ms 6380 KB Output is correct
88 Correct 7 ms 6508 KB Output is correct
89 Correct 7 ms 6508 KB Output is correct
90 Correct 7 ms 6508 KB Output is correct
91 Correct 7 ms 6508 KB Output is correct
92 Correct 7 ms 6508 KB Output is correct
93 Correct 7 ms 6508 KB Output is correct
94 Correct 5 ms 6252 KB Output is correct
95 Correct 5 ms 6252 KB Output is correct
96 Correct 5 ms 6252 KB Output is correct
97 Correct 4 ms 6252 KB Output is correct
98 Correct 5 ms 6252 KB Output is correct
99 Correct 6 ms 6252 KB Output is correct
100 Correct 5 ms 6252 KB Output is correct
101 Correct 5 ms 6252 KB Output is correct
102 Correct 5 ms 6252 KB Output is correct
103 Correct 6 ms 6252 KB Output is correct
104 Correct 13 ms 6892 KB Output is correct
105 Correct 19 ms 7660 KB Output is correct
106 Correct 5 ms 6252 KB Output is correct
107 Correct 40 ms 9196 KB Output is correct
108 Correct 52 ms 9964 KB Output is correct
109 Correct 5 ms 6252 KB Output is correct
110 Correct 86 ms 11372 KB Output is correct
111 Correct 104 ms 12140 KB Output is correct
112 Correct 5 ms 6252 KB Output is correct
113 Correct 153 ms 13676 KB Output is correct
114 Correct 101 ms 13420 KB Output is correct
115 Incorrect 106 ms 13548 KB Output isn't correct
116 Halted 0 ms 0 KB -