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Submission #492009

# Submission time Handle Problem Language Result Execution time Memory
492009 2021-12-05T10:15:52 Z StoRovinato Dreaming (IOI13_dreaming) C++17
47 / 100
 79 ms 17988 KB 
#include <bits/stdc++.h>
#include "dreaming.h"

#define MAXN 100000

using namespace std;

vector<pair<int, int>> nodi[MAXN];
vector<bool> proc;
vector<int> dist;

void dfs(int v, vector<int>& gruppo)
{
	proc[v] = true;
	gruppo.push_back(v);

	for (auto [u, w]: nodi[v])
	{
		if (!proc[u])
		{
			dist[u] = dist[v] + w;
			dfs(u, gruppo);
		}
	}
}

void dfs2(int v)
{
	proc[v] = true;

	for (auto [u, w]: nodi[v])
	{
		if (!proc[u])
		{
			dist[u] = dist[v] + w;
			dfs2(u);
		}
	}
}

bool dfs3(int v, int p, int y, vector<int>& diam)
{
	if (v == y)
		return true;

	bool ok = false;
	for (auto [u, w]: nodi[v])
	{
		if (u != p)
		{
			if (dfs3(u, v, y, diam))
			{
				ok = true;
				diam.push_back(w);
				break;
			}
		}
	}
	
	return ok;
}

vector<int> trova_diametro(int v)
{
	vector<int> gruppo;
	dist[v] = 0; 
	dfs(v, gruppo);


	sort(gruppo.begin(), gruppo.end(), [&](int a, int b){return dist[a] > dist[b];});

	for (int i: gruppo)
		proc[i] = false;

	int x, y;
	x = gruppo[0];

	dist[x] = 0;
	dfs2(x);

	sort(gruppo.begin(), gruppo.end(), [&](int a, int b){return dist[a] > dist[b];});

	y = gruppo[0];

	vector<int> diam;
	dfs3(x, -1, y, diam);
	return diam;
}

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

	vector<int> valori;
	vector<int> diam;

	dist.resize(N, 0);
	proc.resize(N, false);
	for (int i = 0; i < N; i++)
	{
		if (!proc[i])
		{
			vector<int> diametro = trova_diametro(i);

			/*
			cout << "\n\n";
			for (int i: diametro)
				cout << i << " ";
			cout << "\n\n";
			*/


			if (diametro.empty())
			{
				valori.push_back(0);
				diam.push_back(0);
				continue;
			}

			int sx = 0, dx = 0;
			for (int j: diametro)
				dx += j;
			int minimo = dx;
			diam.push_back(dx);
			for (int j = 0; j < diametro.size(); j++)
			{
				sx += diametro[j];
				dx -= diametro[j];

				minimo = min(minimo, max(sx, dx));
			}

			valori.push_back(minimo);
		}
	}

	sort(valori.begin(), valori.end());
	sort(diam.begin(), diam.end());

	return max(diam.back(), valori.back() + valori[valori.size() - 2] + L);
}

Compilation message

dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:130:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  130 |    for (int j = 0; j < diametro.size(); j++)
      |                    ~~^~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 16568 KB Output is correct
2 Correct 64 ms 16716 KB Output is correct
3 Correct 38 ms 11764 KB Output is correct
4 Correct 8 ms 4812 KB Output is correct
5 Correct 7 ms 3788 KB Output is correct
6 Correct 13 ms 5836 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 25 ms 7248 KB Output is correct
9 Correct 31 ms 9400 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 49 ms 11068 KB Output is correct
12 Correct 68 ms 14040 KB Output is correct
13 Correct 2 ms 2764 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 1 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 2 ms 2652 KB Output is correct
12 Correct 1 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 1 ms 2636 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 1 ms 2636 KB Output is correct
19 Correct 1 ms 2636 KB Output is correct
20 Correct 1 ms 2636 KB Output is correct
21 Correct 1 ms 2636 KB Output is correct
22 Correct 1 ms 2636 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2636 KB Output is correct
25 Correct 1 ms 2648 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 16568 KB Output is correct
2 Correct 64 ms 16716 KB Output is correct
3 Correct 38 ms 11764 KB Output is correct
4 Correct 8 ms 4812 KB Output is correct
5 Correct 7 ms 3788 KB Output is correct
6 Correct 13 ms 5836 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 25 ms 7248 KB Output is correct
9 Correct 31 ms 9400 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 49 ms 11068 KB Output is correct
12 Correct 68 ms 14040 KB Output is correct
13 Correct 2 ms 2764 KB Output is correct
14 Correct 1 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 1 ms 2636 KB Output is correct
17 Correct 1 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 2 ms 2636 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 1 ms 2636 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 1 ms 2636 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 1 ms 2636 KB Output is correct
32 Correct 1 ms 2636 KB Output is correct
33 Correct 1 ms 2636 KB Output is correct
34 Correct 1 ms 2636 KB Output is correct
35 Correct 1 ms 2636 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 1 ms 2636 KB Output is correct
38 Correct 1 ms 2648 KB Output is correct
39 Correct 54 ms 16732 KB Output is correct
40 Correct 56 ms 16636 KB Output is correct
41 Correct 37 ms 11712 KB Output is correct
42 Correct 9 ms 4812 KB Output is correct
43 Correct 1 ms 2636 KB Output is correct
44 Correct 2 ms 2636 KB Output is correct
45 Correct 2 ms 2636 KB Output is correct
46 Correct 3 ms 2636 KB Output is correct
47 Correct 1 ms 2636 KB Output is correct
48 Correct 1 ms 2636 KB Output is correct
49 Correct 1 ms 2636 KB Output is correct
50 Correct 2 ms 2636 KB Output is correct
51 Correct 2 ms 2636 KB Output is correct
52 Correct 1 ms 2636 KB Output is correct
53 Correct 2 ms 2636 KB Output is correct
54 Correct 1 ms 2648 KB Output is correct
55 Correct 1 ms 2636 KB Output is correct
56 Correct 1 ms 2636 KB Output is correct
57 Correct 59 ms 8900 KB Output is correct
58 Correct 60 ms 8716 KB Output is correct
59 Correct 63 ms 8896 KB Output is correct
60 Correct 64 ms 8700 KB Output is correct
61 Correct 79 ms 8712 KB Output is correct
62 Correct 65 ms 8592 KB Output is correct
63 Correct 55 ms 8648 KB Output is correct
64 Correct 70 ms 8664 KB Output is correct
65 Correct 77 ms 8620 KB Output is correct
66 Correct 64 ms 8556 KB Output is correct
67 Correct 64 ms 8800 KB Output is correct
68 Correct 69 ms 8868 KB Output is correct
69 Correct 71 ms 8744 KB Output is correct
70 Correct 68 ms 8668 KB Output is correct
71 Correct 1 ms 2636 KB Output is correct
72 Correct 3 ms 2792 KB Output is correct
73 Correct 3 ms 2788 KB Output is correct
74 Correct 3 ms 2764 KB Output is correct
75 Correct 3 ms 2764 KB Output is correct
76 Correct 3 ms 2764 KB Output is correct
77 Correct 3 ms 2764 KB Output is correct
78 Correct 3 ms 2764 KB Output is correct
79 Correct 3 ms 2892 KB Output is correct
80 Correct 72 ms 8840 KB Output is correct
81 Correct 63 ms 8768 KB Output is correct
82 Correct 64 ms 8744 KB Output is correct
83 Correct 65 ms 8796 KB Output is correct
84 Correct 2 ms 2764 KB Output is correct
85 Correct 2 ms 2764 KB Output is correct
86 Correct 3 ms 2764 KB Output is correct
87 Correct 3 ms 2792 KB Output is correct
88 Correct 2 ms 2764 KB Output is correct
89 Correct 2 ms 2792 KB Output is correct
90 Correct 2 ms 2792 KB Output is correct
91 Correct 3 ms 2820 KB Output is correct
92 Correct 3 ms 2764 KB Output is correct
93 Correct 3 ms 2764 KB Output is correct
94 Correct 1 ms 2636 KB Output is correct
95 Correct 1 ms 2636 KB Output is correct
96 Correct 1 ms 2636 KB Output is correct
97 Correct 1 ms 2636 KB Output is correct
98 Correct 2 ms 2636 KB Output is correct
99 Correct 2 ms 2636 KB Output is correct
100 Correct 1 ms 2636 KB Output is correct
101 Correct 2 ms 2636 KB Output is correct
102 Correct 2 ms 2636 KB Output is correct
103 Correct 1 ms 2636 KB Output is correct
104 Correct 7 ms 3788 KB Output is correct
105 Correct 14 ms 5852 KB Output is correct
106 Correct 1 ms 2636 KB Output is correct
107 Correct 24 ms 7172 KB Output is correct
108 Correct 29 ms 9408 KB Output is correct
109 Correct 2 ms 2636 KB Output is correct
110 Correct 51 ms 11068 KB Output is correct
111 Correct 68 ms 14012 KB Output is correct
112 Correct 2 ms 2764 KB Output is correct
113 Correct 77 ms 17988 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 5960 KB Output is correct
2 Incorrect 23 ms 6088 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 1 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 2 ms 2652 KB Output is correct
12 Correct 1 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 1 ms 2636 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 1 ms 2636 KB Output is correct
19 Correct 1 ms 2636 KB Output is correct
20 Correct 1 ms 2636 KB Output is correct
21 Correct 1 ms 2636 KB Output is correct
22 Correct 1 ms 2636 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2636 KB Output is correct
25 Correct 1 ms 2648 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 2 ms 2736 KB Output is correct
28 Correct 3 ms 2764 KB Output is correct
29 Correct 2 ms 2724 KB Output is correct
30 Correct 2 ms 2764 KB Output is correct
31 Correct 3 ms 2764 KB Output is correct
32 Incorrect 2 ms 2656 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 16568 KB Output is correct
2 Correct 64 ms 16716 KB Output is correct
3 Correct 38 ms 11764 KB Output is correct
4 Correct 8 ms 4812 KB Output is correct
5 Correct 7 ms 3788 KB Output is correct
6 Correct 13 ms 5836 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 25 ms 7248 KB Output is correct
9 Correct 31 ms 9400 KB Output is correct
10 Correct 2 ms 2636 KB Output is correct
11 Correct 49 ms 11068 KB Output is correct
12 Correct 68 ms 14040 KB Output is correct
13 Correct 2 ms 2764 KB Output is correct
14 Correct 1 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 1 ms 2636 KB Output is correct
17 Correct 1 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 2 ms 2636 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 1 ms 2636 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 1 ms 2636 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 1 ms 2636 KB Output is correct
32 Correct 1 ms 2636 KB Output is correct
33 Correct 1 ms 2636 KB Output is correct
34 Correct 1 ms 2636 KB Output is correct
35 Correct 1 ms 2636 KB Output is correct
36 Correct 1 ms 2652 KB Output is correct
37 Correct 1 ms 2636 KB Output is correct
38 Correct 1 ms 2648 KB Output is correct
39 Correct 54 ms 16732 KB Output is correct
40 Correct 56 ms 16636 KB Output is correct
41 Correct 37 ms 11712 KB Output is correct
42 Correct 9 ms 4812 KB Output is correct
43 Correct 1 ms 2636 KB Output is correct
44 Correct 2 ms 2636 KB Output is correct
45 Correct 2 ms 2636 KB Output is correct
46 Correct 3 ms 2636 KB Output is correct
47 Correct 1 ms 2636 KB Output is correct
48 Correct 1 ms 2636 KB Output is correct
49 Correct 1 ms 2636 KB Output is correct
50 Correct 2 ms 2636 KB Output is correct
51 Correct 2 ms 2636 KB Output is correct
52 Correct 1 ms 2636 KB Output is correct
53 Correct 2 ms 2636 KB Output is correct
54 Correct 1 ms 2648 KB Output is correct
55 Correct 1 ms 2636 KB Output is correct
56 Correct 1 ms 2636 KB Output is correct
57 Correct 59 ms 8900 KB Output is correct
58 Correct 60 ms 8716 KB Output is correct
59 Correct 63 ms 8896 KB Output is correct
60 Correct 64 ms 8700 KB Output is correct
61 Correct 79 ms 8712 KB Output is correct
62 Correct 65 ms 8592 KB Output is correct
63 Correct 55 ms 8648 KB Output is correct
64 Correct 70 ms 8664 KB Output is correct
65 Correct 77 ms 8620 KB Output is correct
66 Correct 64 ms 8556 KB Output is correct
67 Correct 64 ms 8800 KB Output is correct
68 Correct 69 ms 8868 KB Output is correct
69 Correct 71 ms 8744 KB Output is correct
70 Correct 68 ms 8668 KB Output is correct
71 Correct 1 ms 2636 KB Output is correct
72 Correct 3 ms 2792 KB Output is correct
73 Correct 3 ms 2788 KB Output is correct
74 Correct 3 ms 2764 KB Output is correct
75 Correct 3 ms 2764 KB Output is correct
76 Correct 3 ms 2764 KB Output is correct
77 Correct 3 ms 2764 KB Output is correct
78 Correct 3 ms 2764 KB Output is correct
79 Correct 3 ms 2892 KB Output is correct
80 Correct 72 ms 8840 KB Output is correct
81 Correct 63 ms 8768 KB Output is correct
82 Correct 64 ms 8744 KB Output is correct
83 Correct 65 ms 8796 KB Output is correct
84 Correct 2 ms 2764 KB Output is correct
85 Correct 2 ms 2764 KB Output is correct
86 Correct 3 ms 2764 KB Output is correct
87 Correct 3 ms 2792 KB Output is correct
88 Correct 2 ms 2764 KB Output is correct
89 Correct 2 ms 2792 KB Output is correct
90 Correct 2 ms 2792 KB Output is correct
91 Correct 3 ms 2820 KB Output is correct
92 Correct 3 ms 2764 KB Output is correct
93 Correct 3 ms 2764 KB Output is correct
94 Correct 1 ms 2636 KB Output is correct
95 Correct 1 ms 2636 KB Output is correct
96 Correct 1 ms 2636 KB Output is correct
97 Correct 1 ms 2636 KB Output is correct
98 Correct 2 ms 2636 KB Output is correct
99 Correct 2 ms 2636 KB Output is correct
100 Correct 1 ms 2636 KB Output is correct
101 Correct 2 ms 2636 KB Output is correct
102 Correct 2 ms 2636 KB Output is correct
103 Correct 1 ms 2636 KB Output is correct
104 Correct 7 ms 3788 KB Output is correct
105 Correct 14 ms 5852 KB Output is correct
106 Correct 1 ms 2636 KB Output is correct
107 Correct 24 ms 7172 KB Output is correct
108 Correct 29 ms 9408 KB Output is correct
109 Correct 2 ms 2636 KB Output is correct
110 Correct 51 ms 11068 KB Output is correct
111 Correct 68 ms 14012 KB Output is correct
112 Correct 2 ms 2764 KB Output is correct
113 Correct 77 ms 17988 KB Output is correct
114 Correct 23 ms 5960 KB Output is correct
115 Incorrect 23 ms 6088 KB Output isn't correct
116 Halted 0 ms 0 KB -