oj.uz

Submission #504913

# Submission time Handle Problem Language Result Execution time Memory
504913 2022-01-10T10:04:07 Z Mazaalai Evacuation plan (IZhO18_plan) C++17
100 / 100
 865 ms 52284 KB 
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
int n, m, k, q;
const int N = 1e5 + 5;
using PII = pair <int, int>;
vector <PII> paths[N], check[N], cities;
int dis[N], par[N], ans[N];
bool open[N];
int find(int a) {
	if (a == par[a]) return par[a];
	return par[a] = find(par[a]);
}
void addEdges(int pos, int dist) {
	for (auto& [b, c] : paths[pos]) {
		if (!open[b]) continue;
		int x = find(pos), y = find(b);
		if (x == y) continue;
		if (check[y].size() > check[x].size()) swap(x, y);
		par[y] = x;
		for (auto& [target, id] : check[y]) {
			int z = find(target);
			if (z == x) ans[id] = max(ans[id], dist);
			else check[x].pb({target, id});
		}
	}
}
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	// freopen("in.txt", "r", stdin);
	// freopen("out.txt", "w", stdout);
	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int a, b, c; cin >> a >> b >> c;
		paths[a].pb({b, c});
		paths[b].pb({a, c});
	}
	cin >> k;
	set <PII> bfs; // dist, pos;
	for (int i = 0; i < k; i++) {
		int x; cin >> x;
		bfs.insert({0, x});
	}
	memset(dis, -1, sizeof(dis));
	while(!bfs.empty()) {
		int dist, pos;
		auto it = bfs.begin();
		tie(dist, pos) = *it;
		bfs.erase(it);
		if (dis[pos] != -1) continue;
		cities.pb({pos, dist});
		dis[pos] = dist;
		for (auto& [b, c] : paths[pos]) {
			if (dis[b] != -1) continue;
			bfs.insert({dist+c, b});
		}
	}
	cin >> q;
	for (int i = 0; i < q; i++) {
		int a, b; cin >> a >> b;
		check[a].pb({b, i});
		check[b].pb({a, i});
	}
	for (int i = 1; i <= n; i++) par[i] = i;
	while(!cities.empty()) {
		int pos, dist;
		tie(pos, dist) = cities.back();
		cities.pop_back();
		open[pos] = 1;
		addEdges(pos, dist);
	}
	for (int i = 0; i < q; i++) cout << ans[i] << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5388 KB Output is correct
2 Correct 4 ms 5532 KB Output is correct
3 Correct 4 ms 5540 KB Output is correct
4 Correct 3 ms 5316 KB Output is correct
5 Correct 4 ms 5452 KB Output is correct
6 Correct 4 ms 5416 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5420 KB Output is correct
9 Correct 4 ms 5452 KB Output is correct
10 Correct 4 ms 5580 KB Output is correct
11 Correct 4 ms 5452 KB Output is correct
12 Correct 5 ms 5452 KB Output is correct
13 Correct 5 ms 5544 KB Output is correct
14 Correct 4 ms 5452 KB Output is correct
15 Correct 4 ms 5452 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5388 KB Output is correct
2 Correct 4 ms 5532 KB Output is correct
3 Correct 4 ms 5540 KB Output is correct
4 Correct 3 ms 5316 KB Output is correct
5 Correct 4 ms 5452 KB Output is correct
6 Correct 4 ms 5416 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5420 KB Output is correct
9 Correct 4 ms 5452 KB Output is correct
10 Correct 4 ms 5580 KB Output is correct
11 Correct 4 ms 5452 KB Output is correct
12 Correct 5 ms 5452 KB Output is correct
13 Correct 5 ms 5544 KB Output is correct
14 Correct 4 ms 5452 KB Output is correct
15 Correct 4 ms 5452 KB Output is correct
16 Correct 147 ms 17956 KB Output is correct
17 Correct 775 ms 46780 KB Output is correct
18 Correct 41 ms 9108 KB Output is correct
19 Correct 155 ms 20104 KB Output is correct
20 Correct 865 ms 47504 KB Output is correct
21 Correct 340 ms 26768 KB Output is correct
22 Correct 113 ms 17500 KB Output is correct
23 Correct 814 ms 46636 KB Output is correct
24 Correct 767 ms 46656 KB Output is correct
25 Correct 819 ms 47032 KB Output is correct
26 Correct 131 ms 20344 KB Output is correct
27 Correct 144 ms 20324 KB Output is correct
28 Correct 153 ms 20056 KB Output is correct
29 Correct 152 ms 20332 KB Output is correct
30 Correct 114 ms 20400 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5324 KB Output is correct
2 Correct 3 ms 5400 KB Output is correct
3 Correct 4 ms 5324 KB Output is correct
4 Correct 3 ms 5324 KB Output is correct
5 Correct 5 ms 5324 KB Output is correct
6 Correct 4 ms 5452 KB Output is correct
7 Correct 4 ms 5324 KB Output is correct
8 Correct 3 ms 5324 KB Output is correct
9 Correct 4 ms 5400 KB Output is correct
10 Correct 3 ms 5400 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 191 ms 20600 KB Output is correct
2 Correct 770 ms 44460 KB Output is correct
3 Correct 819 ms 44560 KB Output is correct
4 Correct 51 ms 11528 KB Output is correct
5 Correct 791 ms 44480 KB Output is correct
6 Correct 731 ms 44556 KB Output is correct
7 Correct 736 ms 44560 KB Output is correct
8 Correct 694 ms 44576 KB Output is correct
9 Correct 673 ms 44524 KB Output is correct
10 Correct 788 ms 44520 KB Output is correct
11 Correct 728 ms 44680 KB Output is correct
12 Correct 737 ms 44584 KB Output is correct
13 Correct 715 ms 44588 KB Output is correct
14 Correct 696 ms 44768 KB Output is correct
15 Correct 690 ms 45096 KB Output is correct
16 Correct 709 ms 44540 KB Output is correct
17 Correct 701 ms 44552 KB Output is correct
18 Correct 747 ms 44592 KB Output is correct
19 Correct 70 ms 11540 KB Output is correct
20 Correct 754 ms 44552 KB Output is correct
21 Correct 661 ms 50384 KB Output is correct
22 Correct 86 ms 17160 KB Output is correct
23 Correct 65 ms 12132 KB Output is correct
24 Correct 81 ms 17104 KB Output is correct
25 Correct 79 ms 17164 KB Output is correct
26 Correct 70 ms 12292 KB Output is correct
27 Correct 50 ms 11568 KB Output is correct
28 Correct 78 ms 17040 KB Output is correct
29 Correct 44 ms 11516 KB Output is correct
30 Correct 92 ms 17112 KB Output is correct
31 Correct 56 ms 11448 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5388 KB Output is correct
2 Correct 4 ms 5532 KB Output is correct
3 Correct 4 ms 5540 KB Output is correct
4 Correct 3 ms 5316 KB Output is correct
5 Correct 4 ms 5452 KB Output is correct
6 Correct 4 ms 5416 KB Output is correct
7 Correct 3 ms 5324 KB Output is correct
8 Correct 3 ms 5420 KB Output is correct
9 Correct 4 ms 5452 KB Output is correct
10 Correct 4 ms 5580 KB Output is correct
11 Correct 4 ms 5452 KB Output is correct
12 Correct 5 ms 5452 KB Output is correct
13 Correct 5 ms 5544 KB Output is correct
14 Correct 4 ms 5452 KB Output is correct
15 Correct 4 ms 5452 KB Output is correct
16 Correct 147 ms 17956 KB Output is correct
17 Correct 775 ms 46780 KB Output is correct
18 Correct 41 ms 9108 KB Output is correct
19 Correct 155 ms 20104 KB Output is correct
20 Correct 865 ms 47504 KB Output is correct
21 Correct 340 ms 26768 KB Output is correct
22 Correct 113 ms 17500 KB Output is correct
23 Correct 814 ms 46636 KB Output is correct
24 Correct 767 ms 46656 KB Output is correct
25 Correct 819 ms 47032 KB Output is correct
26 Correct 131 ms 20344 KB Output is correct
27 Correct 144 ms 20324 KB Output is correct
28 Correct 153 ms 20056 KB Output is correct
29 Correct 152 ms 20332 KB Output is correct
30 Correct 114 ms 20400 KB Output is correct
31 Correct 3 ms 5324 KB Output is correct
32 Correct 3 ms 5400 KB Output is correct
33 Correct 4 ms 5324 KB Output is correct
34 Correct 3 ms 5324 KB Output is correct
35 Correct 5 ms 5324 KB Output is correct
36 Correct 4 ms 5452 KB Output is correct
37 Correct 4 ms 5324 KB Output is correct
38 Correct 3 ms 5324 KB Output is correct
39 Correct 4 ms 5400 KB Output is correct
40 Correct 3 ms 5400 KB Output is correct
41 Correct 191 ms 20600 KB Output is correct
42 Correct 770 ms 44460 KB Output is correct
43 Correct 819 ms 44560 KB Output is correct
44 Correct 51 ms 11528 KB Output is correct
45 Correct 791 ms 44480 KB Output is correct
46 Correct 731 ms 44556 KB Output is correct
47 Correct 736 ms 44560 KB Output is correct
48 Correct 694 ms 44576 KB Output is correct
49 Correct 673 ms 44524 KB Output is correct
50 Correct 788 ms 44520 KB Output is correct
51 Correct 728 ms 44680 KB Output is correct
52 Correct 737 ms 44584 KB Output is correct
53 Correct 715 ms 44588 KB Output is correct
54 Correct 696 ms 44768 KB Output is correct
55 Correct 690 ms 45096 KB Output is correct
56 Correct 709 ms 44540 KB Output is correct
57 Correct 701 ms 44552 KB Output is correct
58 Correct 747 ms 44592 KB Output is correct
59 Correct 70 ms 11540 KB Output is correct
60 Correct 754 ms 44552 KB Output is correct
61 Correct 661 ms 50384 KB Output is correct
62 Correct 86 ms 17160 KB Output is correct
63 Correct 65 ms 12132 KB Output is correct
64 Correct 81 ms 17104 KB Output is correct
65 Correct 79 ms 17164 KB Output is correct
66 Correct 70 ms 12292 KB Output is correct
67 Correct 50 ms 11568 KB Output is correct
68 Correct 78 ms 17040 KB Output is correct
69 Correct 44 ms 11516 KB Output is correct
70 Correct 92 ms 17112 KB Output is correct
71 Correct 56 ms 11448 KB Output is correct
72 Correct 238 ms 23632 KB Output is correct
73 Correct 733 ms 47420 KB Output is correct
74 Correct 722 ms 47484 KB Output is correct
75 Correct 746 ms 46644 KB Output is correct
76 Correct 748 ms 46600 KB Output is correct
77 Correct 749 ms 46652 KB Output is correct
78 Correct 770 ms 46688 KB Output is correct
79 Correct 823 ms 46628 KB Output is correct
80 Correct 844 ms 46624 KB Output is correct
81 Correct 736 ms 46668 KB Output is correct
82 Correct 815 ms 46588 KB Output is correct
83 Correct 828 ms 46584 KB Output is correct
84 Correct 750 ms 46744 KB Output is correct
85 Correct 810 ms 47972 KB Output is correct
86 Correct 726 ms 46628 KB Output is correct
87 Correct 750 ms 46648 KB Output is correct
88 Correct 819 ms 47436 KB Output is correct
89 Correct 100 ms 18412 KB Output is correct
90 Correct 701 ms 46652 KB Output is correct
91 Correct 851 ms 52284 KB Output is correct
92 Correct 149 ms 20232 KB Output is correct
93 Correct 125 ms 24472 KB Output is correct
94 Correct 137 ms 19992 KB Output is correct
95 Correct 127 ms 20020 KB Output is correct
96 Correct 143 ms 25396 KB Output is correct
97 Correct 107 ms 18996 KB Output is correct
98 Correct 147 ms 20024 KB Output is correct
99 Correct 107 ms 19524 KB Output is correct
100 Correct 176 ms 20036 KB Output is correct