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Submission #401453

# Submission time Handle Problem Language Result Execution time Memory
401453 2021-05-10T09:37:01 Z Azimjon Dreaming (IOI13_dreaming) C++17
47 / 100
 95 ms 14964 KB 
#include <bits/stdc++.h>
#include "dreaming.h"

using namespace std;

typedef long long ll;

const int UNVISITED = -1;
const int N = 111111;

int finish;
int d[N];
vector<pair<int, int>> g[N];

vector<int> cc, path;

void dfs(int x, int y) {
	cc.push_back(x);
	for (auto [a, b] : g[x]) {
		if (a == y) continue;
		d[a] = d[x] + b;

		dfs(a, x);
	}
}

void dff(int x, int y) {
	if (!path.empty() && path.back() == finish) return;

	path.push_back(x);
	// cout << x << endl;

	if (path.back() == finish) return;

	for (auto [a, b] : g[x]) {
		if (a == y) continue;

		dff(a, x);

		if (path.back() == finish) return;
	}

	path.pop_back();
}

int travelTime(int n, int m, int l, int a[], int b[], int t[]) {
	memset(d, UNVISITED, sizeof(d));

	for (int i = 0; i < m; i++) {
		g[a[i]].push_back({b[i], t[i]});
		g[b[i]].push_back({a[i], t[i]});
	}

	vector<int> r, di;

	for (int i = 0; i < n; i++) {
		if (d[i] == UNVISITED) {
			cc.clear();
			d[i] = 0;
			dfs(i, N);

			int nu = i;
			for (int x : cc) {
				if (d[x] > d[nu]) nu = x;
			}

			cc.clear();
			d[nu] = 0;
			dfs(nu, N);

			int ku = nu;
			for (int x : cc) {
				if (d[x] > d[ku]) ku = x;
			}

			path.clear();
			finish = ku;
			dff(nu, N);

			int diam = d[ku];

			int centre = 0;
			for (int j = 0; j < (int)path.size(); j++) {
				if (abs(2 * d[path[j]] - diam)
					<= abs(2 * d[path[centre]] - diam)) {
					centre = j;
				}
			}

			centre = path[centre];

			int radius = max(d[centre], diam - d[centre]);
			r.push_back(radius);
			di.push_back(diam);
			/*
						cerr << nu << " " << ku << " " << diam << endl;
						cerr << centre << " " << radius << endl;
						cerr << "=================\n";
						for (int i : path)
							cerr << i << " ";

						cerr << "\n=================\n";
						*/
		}
	}

	sort(r.rbegin(), r.rend());
	/*
		for (int i : r) {
			cerr << i << " ";
		}
	*/
	if (m == 0 && n > 2) return 2 * l;
	if (m == 0 && n == 1) return 0;
	if (m == 0 && n == 2) return l;

	if (r.size() == 1) return di[0];

	return max(*max_element(di.begin(), di.end()), r[0] + r[1] + l);
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 14120 KB Output is correct
2 Correct 66 ms 14168 KB Output is correct
3 Correct 38 ms 10224 KB Output is correct
4 Correct 9 ms 4940 KB Output is correct
5 Correct 8 ms 4152 KB Output is correct
6 Correct 15 ms 5640 KB Output is correct
7 Correct 3 ms 3276 KB Output is correct
8 Correct 27 ms 6936 KB Output is correct
9 Correct 39 ms 8488 KB Output is correct
10 Correct 3 ms 3404 KB Output is correct
11 Correct 53 ms 9860 KB Output is correct
12 Correct 71 ms 12100 KB Output is correct
13 Correct 4 ms 3404 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3276 KB Output is correct
2 Correct 2 ms 3280 KB Output is correct
3 Correct 3 ms 3276 KB Output is correct
4 Correct 2 ms 3276 KB Output is correct
5 Correct 2 ms 3276 KB Output is correct
6 Correct 3 ms 3280 KB Output is correct
7 Correct 2 ms 3276 KB Output is correct
8 Correct 2 ms 3276 KB Output is correct
9 Correct 3 ms 3240 KB Output is correct
10 Correct 3 ms 3276 KB Output is correct
11 Correct 3 ms 3276 KB Output is correct
12 Correct 3 ms 3276 KB Output is correct
13 Correct 3 ms 3276 KB Output is correct
14 Correct 3 ms 3276 KB Output is correct
15 Correct 3 ms 3276 KB Output is correct
16 Correct 2 ms 3276 KB Output is correct
17 Correct 2 ms 3276 KB Output is correct
18 Correct 3 ms 3276 KB Output is correct
19 Correct 3 ms 3276 KB Output is correct
20 Correct 3 ms 3276 KB Output is correct
21 Correct 2 ms 3276 KB Output is correct
22 Correct 2 ms 3276 KB Output is correct
23 Correct 2 ms 3276 KB Output is correct
24 Correct 3 ms 3276 KB Output is correct
25 Correct 3 ms 3276 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 14120 KB Output is correct
2 Correct 66 ms 14168 KB Output is correct
3 Correct 38 ms 10224 KB Output is correct
4 Correct 9 ms 4940 KB Output is correct
5 Correct 8 ms 4152 KB Output is correct
6 Correct 15 ms 5640 KB Output is correct
7 Correct 3 ms 3276 KB Output is correct
8 Correct 27 ms 6936 KB Output is correct
9 Correct 39 ms 8488 KB Output is correct
10 Correct 3 ms 3404 KB Output is correct
11 Correct 53 ms 9860 KB Output is correct
12 Correct 71 ms 12100 KB Output is correct
13 Correct 4 ms 3404 KB Output is correct
14 Correct 2 ms 3276 KB Output is correct
15 Correct 2 ms 3280 KB Output is correct
16 Correct 3 ms 3276 KB Output is correct
17 Correct 2 ms 3276 KB Output is correct
18 Correct 2 ms 3276 KB Output is correct
19 Correct 3 ms 3280 KB Output is correct
20 Correct 2 ms 3276 KB Output is correct
21 Correct 2 ms 3276 KB Output is correct
22 Correct 3 ms 3240 KB Output is correct
23 Correct 3 ms 3276 KB Output is correct
24 Correct 3 ms 3276 KB Output is correct
25 Correct 3 ms 3276 KB Output is correct
26 Correct 3 ms 3276 KB Output is correct
27 Correct 3 ms 3276 KB Output is correct
28 Correct 3 ms 3276 KB Output is correct
29 Correct 2 ms 3276 KB Output is correct
30 Correct 2 ms 3276 KB Output is correct
31 Correct 3 ms 3276 KB Output is correct
32 Correct 3 ms 3276 KB Output is correct
33 Correct 3 ms 3276 KB Output is correct
34 Correct 2 ms 3276 KB Output is correct
35 Correct 2 ms 3276 KB Output is correct
36 Correct 2 ms 3276 KB Output is correct
37 Correct 3 ms 3276 KB Output is correct
38 Correct 3 ms 3276 KB Output is correct
39 Correct 71 ms 14016 KB Output is correct
40 Correct 55 ms 14016 KB Output is correct
41 Correct 36 ms 10236 KB Output is correct
42 Correct 9 ms 4812 KB Output is correct
43 Correct 2 ms 3276 KB Output is correct
44 Correct 3 ms 3276 KB Output is correct
45 Correct 3 ms 3276 KB Output is correct
46 Correct 2 ms 3276 KB Output is correct
47 Correct 3 ms 3276 KB Output is correct
48 Correct 3 ms 3276 KB Output is correct
49 Correct 3 ms 3276 KB Output is correct
50 Correct 2 ms 3276 KB Output is correct
51 Correct 3 ms 3392 KB Output is correct
52 Correct 3 ms 3276 KB Output is correct
53 Correct 3 ms 3276 KB Output is correct
54 Correct 3 ms 3276 KB Output is correct
55 Correct 3 ms 3276 KB Output is correct
56 Correct 2 ms 3276 KB Output is correct
57 Correct 70 ms 9100 KB Output is correct
58 Correct 78 ms 8772 KB Output is correct
59 Correct 94 ms 9020 KB Output is correct
60 Correct 74 ms 8784 KB Output is correct
61 Correct 74 ms 8900 KB Output is correct
62 Correct 85 ms 8680 KB Output is correct
63 Correct 64 ms 8776 KB Output is correct
64 Correct 71 ms 8776 KB Output is correct
65 Correct 67 ms 8748 KB Output is correct
66 Correct 66 ms 8812 KB Output is correct
67 Correct 83 ms 9012 KB Output is correct
68 Correct 93 ms 9156 KB Output is correct
69 Correct 73 ms 8800 KB Output is correct
70 Correct 78 ms 8728 KB Output is correct
71 Correct 2 ms 3276 KB Output is correct
72 Correct 4 ms 3404 KB Output is correct
73 Correct 4 ms 3532 KB Output is correct
74 Correct 4 ms 3532 KB Output is correct
75 Correct 4 ms 3404 KB Output is correct
76 Correct 4 ms 3540 KB Output is correct
77 Correct 4 ms 3532 KB Output is correct
78 Correct 4 ms 3404 KB Output is correct
79 Correct 4 ms 3532 KB Output is correct
80 Correct 84 ms 9020 KB Output is correct
81 Correct 86 ms 9024 KB Output is correct
82 Correct 71 ms 8876 KB Output is correct
83 Correct 70 ms 8956 KB Output is correct
84 Correct 3 ms 3404 KB Output is correct
85 Correct 3 ms 3404 KB Output is correct
86 Correct 3 ms 3404 KB Output is correct
87 Correct 4 ms 3424 KB Output is correct
88 Correct 4 ms 3404 KB Output is correct
89 Correct 4 ms 3404 KB Output is correct
90 Correct 5 ms 3404 KB Output is correct
91 Correct 4 ms 3532 KB Output is correct
92 Correct 5 ms 3404 KB Output is correct
93 Correct 4 ms 3404 KB Output is correct
94 Correct 3 ms 3276 KB Output is correct
95 Correct 2 ms 3276 KB Output is correct
96 Correct 3 ms 3276 KB Output is correct
97 Correct 2 ms 3300 KB Output is correct
98 Correct 3 ms 3276 KB Output is correct
99 Correct 2 ms 3276 KB Output is correct
100 Correct 2 ms 3276 KB Output is correct
101 Correct 3 ms 3276 KB Output is correct
102 Correct 3 ms 3276 KB Output is correct
103 Correct 2 ms 3276 KB Output is correct
104 Correct 8 ms 4044 KB Output is correct
105 Correct 15 ms 5708 KB Output is correct
106 Correct 3 ms 3276 KB Output is correct
107 Correct 27 ms 6864 KB Output is correct
108 Correct 39 ms 8596 KB Output is correct
109 Correct 3 ms 3404 KB Output is correct
110 Correct 53 ms 9832 KB Output is correct
111 Correct 70 ms 12144 KB Output is correct
112 Correct 3 ms 3408 KB Output is correct
113 Correct 95 ms 14964 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 6276 KB Output is correct
2 Incorrect 25 ms 6328 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3276 KB Output is correct
2 Correct 2 ms 3280 KB Output is correct
3 Correct 3 ms 3276 KB Output is correct
4 Correct 2 ms 3276 KB Output is correct
5 Correct 2 ms 3276 KB Output is correct
6 Correct 3 ms 3280 KB Output is correct
7 Correct 2 ms 3276 KB Output is correct
8 Correct 2 ms 3276 KB Output is correct
9 Correct 3 ms 3240 KB Output is correct
10 Correct 3 ms 3276 KB Output is correct
11 Correct 3 ms 3276 KB Output is correct
12 Correct 3 ms 3276 KB Output is correct
13 Correct 3 ms 3276 KB Output is correct
14 Correct 3 ms 3276 KB Output is correct
15 Correct 3 ms 3276 KB Output is correct
16 Correct 2 ms 3276 KB Output is correct
17 Correct 2 ms 3276 KB Output is correct
18 Correct 3 ms 3276 KB Output is correct
19 Correct 3 ms 3276 KB Output is correct
20 Correct 3 ms 3276 KB Output is correct
21 Correct 2 ms 3276 KB Output is correct
22 Correct 2 ms 3276 KB Output is correct
23 Correct 2 ms 3276 KB Output is correct
24 Correct 3 ms 3276 KB Output is correct
25 Correct 3 ms 3276 KB Output is correct
26 Correct 3 ms 3404 KB Output is correct
27 Correct 3 ms 3404 KB Output is correct
28 Correct 4 ms 3404 KB Output is correct
29 Correct 3 ms 3404 KB Output is correct
30 Correct 3 ms 3404 KB Output is correct
31 Correct 4 ms 3428 KB Output is correct
32 Incorrect 3 ms 3404 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 14120 KB Output is correct
2 Correct 66 ms 14168 KB Output is correct
3 Correct 38 ms 10224 KB Output is correct
4 Correct 9 ms 4940 KB Output is correct
5 Correct 8 ms 4152 KB Output is correct
6 Correct 15 ms 5640 KB Output is correct
7 Correct 3 ms 3276 KB Output is correct
8 Correct 27 ms 6936 KB Output is correct
9 Correct 39 ms 8488 KB Output is correct
10 Correct 3 ms 3404 KB Output is correct
11 Correct 53 ms 9860 KB Output is correct
12 Correct 71 ms 12100 KB Output is correct
13 Correct 4 ms 3404 KB Output is correct
14 Correct 2 ms 3276 KB Output is correct
15 Correct 2 ms 3280 KB Output is correct
16 Correct 3 ms 3276 KB Output is correct
17 Correct 2 ms 3276 KB Output is correct
18 Correct 2 ms 3276 KB Output is correct
19 Correct 3 ms 3280 KB Output is correct
20 Correct 2 ms 3276 KB Output is correct
21 Correct 2 ms 3276 KB Output is correct
22 Correct 3 ms 3240 KB Output is correct
23 Correct 3 ms 3276 KB Output is correct
24 Correct 3 ms 3276 KB Output is correct
25 Correct 3 ms 3276 KB Output is correct
26 Correct 3 ms 3276 KB Output is correct
27 Correct 3 ms 3276 KB Output is correct
28 Correct 3 ms 3276 KB Output is correct
29 Correct 2 ms 3276 KB Output is correct
30 Correct 2 ms 3276 KB Output is correct
31 Correct 3 ms 3276 KB Output is correct
32 Correct 3 ms 3276 KB Output is correct
33 Correct 3 ms 3276 KB Output is correct
34 Correct 2 ms 3276 KB Output is correct
35 Correct 2 ms 3276 KB Output is correct
36 Correct 2 ms 3276 KB Output is correct
37 Correct 3 ms 3276 KB Output is correct
38 Correct 3 ms 3276 KB Output is correct
39 Correct 71 ms 14016 KB Output is correct
40 Correct 55 ms 14016 KB Output is correct
41 Correct 36 ms 10236 KB Output is correct
42 Correct 9 ms 4812 KB Output is correct
43 Correct 2 ms 3276 KB Output is correct
44 Correct 3 ms 3276 KB Output is correct
45 Correct 3 ms 3276 KB Output is correct
46 Correct 2 ms 3276 KB Output is correct
47 Correct 3 ms 3276 KB Output is correct
48 Correct 3 ms 3276 KB Output is correct
49 Correct 3 ms 3276 KB Output is correct
50 Correct 2 ms 3276 KB Output is correct
51 Correct 3 ms 3392 KB Output is correct
52 Correct 3 ms 3276 KB Output is correct
53 Correct 3 ms 3276 KB Output is correct
54 Correct 3 ms 3276 KB Output is correct
55 Correct 3 ms 3276 KB Output is correct
56 Correct 2 ms 3276 KB Output is correct
57 Correct 70 ms 9100 KB Output is correct
58 Correct 78 ms 8772 KB Output is correct
59 Correct 94 ms 9020 KB Output is correct
60 Correct 74 ms 8784 KB Output is correct
61 Correct 74 ms 8900 KB Output is correct
62 Correct 85 ms 8680 KB Output is correct
63 Correct 64 ms 8776 KB Output is correct
64 Correct 71 ms 8776 KB Output is correct
65 Correct 67 ms 8748 KB Output is correct
66 Correct 66 ms 8812 KB Output is correct
67 Correct 83 ms 9012 KB Output is correct
68 Correct 93 ms 9156 KB Output is correct
69 Correct 73 ms 8800 KB Output is correct
70 Correct 78 ms 8728 KB Output is correct
71 Correct 2 ms 3276 KB Output is correct
72 Correct 4 ms 3404 KB Output is correct
73 Correct 4 ms 3532 KB Output is correct
74 Correct 4 ms 3532 KB Output is correct
75 Correct 4 ms 3404 KB Output is correct
76 Correct 4 ms 3540 KB Output is correct
77 Correct 4 ms 3532 KB Output is correct
78 Correct 4 ms 3404 KB Output is correct
79 Correct 4 ms 3532 KB Output is correct
80 Correct 84 ms 9020 KB Output is correct
81 Correct 86 ms 9024 KB Output is correct
82 Correct 71 ms 8876 KB Output is correct
83 Correct 70 ms 8956 KB Output is correct
84 Correct 3 ms 3404 KB Output is correct
85 Correct 3 ms 3404 KB Output is correct
86 Correct 3 ms 3404 KB Output is correct
87 Correct 4 ms 3424 KB Output is correct
88 Correct 4 ms 3404 KB Output is correct
89 Correct 4 ms 3404 KB Output is correct
90 Correct 5 ms 3404 KB Output is correct
91 Correct 4 ms 3532 KB Output is correct
92 Correct 5 ms 3404 KB Output is correct
93 Correct 4 ms 3404 KB Output is correct
94 Correct 3 ms 3276 KB Output is correct
95 Correct 2 ms 3276 KB Output is correct
96 Correct 3 ms 3276 KB Output is correct
97 Correct 2 ms 3300 KB Output is correct
98 Correct 3 ms 3276 KB Output is correct
99 Correct 2 ms 3276 KB Output is correct
100 Correct 2 ms 3276 KB Output is correct
101 Correct 3 ms 3276 KB Output is correct
102 Correct 3 ms 3276 KB Output is correct
103 Correct 2 ms 3276 KB Output is correct
104 Correct 8 ms 4044 KB Output is correct
105 Correct 15 ms 5708 KB Output is correct
106 Correct 3 ms 3276 KB Output is correct
107 Correct 27 ms 6864 KB Output is correct
108 Correct 39 ms 8596 KB Output is correct
109 Correct 3 ms 3404 KB Output is correct
110 Correct 53 ms 9832 KB Output is correct
111 Correct 70 ms 12144 KB Output is correct
112 Correct 3 ms 3408 KB Output is correct
113 Correct 95 ms 14964 KB Output is correct
114 Correct 27 ms 6276 KB Output is correct
115 Incorrect 25 ms 6328 KB Output isn't correct
116 Halted 0 ms 0 KB -