oj.uz

Submission #680705

# Submission time Handle Problem Language Result Execution time Memory
680705 2023-01-11T15:03:20 Z SanguineChameleon Relay Marathon (NOI20_relaymarathon) C++17
100 / 100
 1761 ms 128940 KB 
// BEGIN BOILERPLATE CODE

#include <bits/stdc++.h>
using namespace std;

#ifdef KAMIRULEZ
	const bool kami_loc = true;
	const long long kami_seed = 69420;
#else
	const bool kami_loc = false;
	const long long kami_seed = chrono::steady_clock::now().time_since_epoch().count();
#endif

const string kami_fi = "kamirulez.inp";
const string kami_fo = "kamirulez.out";
mt19937_64 kami_gen(kami_seed);

long long rand_range(long long rmin, long long rmax) {
	uniform_int_distribution<long long> rdist(rmin, rmax);
	return rdist(kami_gen);
}

long double rand_real(long double rmin, long double rmax) {
	uniform_real_distribution<long double> rdist(rmin, rmax);
	return rdist(kami_gen);
}

void file_io(string fi, string fo) {
	if (fi != "" && (!kami_loc || fi == kami_fi)) {
		freopen(fi.c_str(), "r", stdin);
	}
	if (fo != "" && (!kami_loc || fo == kami_fo)) {
		freopen(fo.c_str(), "w", stdout);
	}
}

void set_up() {
	if (kami_loc) {
		file_io(kami_fi, kami_fo);
	}
	ios_base::sync_with_stdio(0);
	cin.tie(0);
}

void just_do_it();

void just_exec_it() {
	if (kami_loc) {
		auto pstart = chrono::steady_clock::now();
		just_do_it();
		auto pend = chrono::steady_clock::now();
		long long ptime = chrono::duration_cast<chrono::milliseconds>(pend - pstart).count();
		string bar(50, '=');
		cout << '\n' << bar << '\n';
		cout << "Time: " << ptime << " ms" << '\n';
	}
	else {
		just_do_it();
	}
}

int main() {
	set_up();
	just_exec_it();
	return 0;
}

// END BOILERPLATE CODE

// BEGIN MAIN CODE

const int ms = 1e5 + 20;
const int inf = 1e9 + 20;
vector<pair<int, int>> adj[ms];
int ds[ms];
int du[ms];
int dv[ms];
int h[ms];
int g[ms];
bool f[ms];
int n;

void dijk(int d[]) {
	priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> q;
	for (int i = 1; i <= n; i++) {
		if (d[i] == 0) {
			h[i] = i;
			q.push({0, i});
		}
	}
	while (!q.empty()) {
		int cd = q.top().first;
		int u = q.top().second;
		q.pop();
		if (d[u] != cd) {
			continue;
		}
		for (auto x: adj[u]) {
			int v = x.first;
			if (f[v]) {
				continue;
			}
			int w = x.second;
			if (d[u] + w < d[v]) {
				d[v] = d[u] + w;
				h[v] = h[u];
				q.push({d[v], v});
			}
		}
	}
}

bool cmp(int u, int v) {
	return dv[u] < dv[v];
}

void just_do_it() {
	//file_io("4special.inp", "4special.out");
	int m, k;
	cin >> n >> m >> k;
	for (int i = 1; i <= n; i++) {
		ds[i] = inf;
		du[i] = inf;
		dv[i] = inf;
	}
	for (int i = 0; i < m; i++) {
		int u, v, w;
		cin >> u >> v >> w;
		adj[u].push_back({v, w});
		adj[v].push_back({u, w});
	}
	for (int i = 0; i < k; i++) {
		int u;
		cin >> u;
		g[i] = u;
		ds[u] = 0;
	}
	dijk(ds);
	int mi = inf;
	int fu = -1;
	int fv = -1;
	for (int i = 1; i <= n; i++) {
		for (auto x: adj[i]) {
			int j = x.first;
			int w = x.second;
			if (h[i] != h[j]) {
				if (ds[i] + ds[j] + w < mi) {
					mi = ds[i] + ds[j] + w;
					fu = h[i];
					fv = h[j];
				}
			}
		}
	}
	du[fu] = 0;
	dijk(du);
	dv[fv] = 0;
	dijk(dv);
	sort(g, g + k, cmp);
	int res = inf;
	for (int i = 0; i < k; i++) {
		if (g[i] == fu || g[i] == fv) {
			continue;
		}
		for (int j = 0; j < k; j++) {
			if (g[j] != g[i] && g[j] != fu && g[j] != fv) {
				res = min(res, du[g[i]] + dv[g[j]]);
				break;
			}
		}
	}
	for (int i = 1; i <= n; i++) {
		ds[i] = inf;
	}
	for (int i = 0; i < k; i++) {
		ds[g[i]] = 0;
	}
	ds[fu] = inf;
	ds[fv] = inf;
	f[fu] = true;
	f[fv] = true;
	dijk(ds);
	for (int i = 1; i <= n; i++) {
		for (auto x: adj[i]) {
			int j = x.first;
			int w = x.second;
			if (h[i] != h[j]) {
				res = min(res, mi + ds[i] + ds[j] + w);
			}
		}
	}
	cout << res;
}

// END MAIN CODE

Compilation message

RelayMarathon.cpp: In function 'void file_io(std::string, std::string)':
RelayMarathon.cpp:30:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |   freopen(fi.c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
RelayMarathon.cpp:33:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   freopen(fo.c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2684 KB Output is correct
5 Correct 3 ms 2676 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 3 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 3 ms 2644 KB Output is correct
15 Correct 2 ms 2684 KB Output is correct
16 Correct 2 ms 2684 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2664 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 4 ms 2648 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2688 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2684 KB Output is correct
5 Correct 3 ms 2676 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 3 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 3 ms 2644 KB Output is correct
15 Correct 2 ms 2684 KB Output is correct
16 Correct 2 ms 2684 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2664 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 4 ms 2648 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2688 KB Output is correct
31 Correct 3 ms 2684 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2688 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 3 ms 2768 KB Output is correct
37 Correct 4 ms 2900 KB Output is correct
38 Correct 2 ms 2688 KB Output is correct
39 Correct 56 ms 5948 KB Output is correct
40 Correct 8 ms 3464 KB Output is correct
41 Correct 3 ms 2644 KB Output is correct
42 Correct 10 ms 3412 KB Output is correct
43 Correct 4 ms 2772 KB Output is correct
44 Correct 4 ms 2644 KB Output is correct
45 Correct 3 ms 2644 KB Output is correct
46 Correct 35 ms 6228 KB Output is correct
47 Correct 7 ms 3156 KB Output is correct
48 Correct 22 ms 5752 KB Output is correct
49 Correct 24 ms 5936 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 3 ms 2796 KB Output is correct
52 Correct 3 ms 2644 KB Output is correct
53 Correct 15 ms 4372 KB Output is correct
54 Correct 34 ms 5936 KB Output is correct
55 Correct 2 ms 2644 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 3 ms 2680 KB Output is correct
58 Correct 46 ms 6232 KB Output is correct
59 Correct 2 ms 2684 KB Output is correct
60 Correct 2 ms 2772 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 8092 KB Output is correct
2 Correct 7 ms 4436 KB Output is correct
3 Correct 1228 ms 64456 KB Output is correct
4 Correct 565 ms 35180 KB Output is correct
5 Correct 177 ms 12032 KB Output is correct
6 Correct 114 ms 10616 KB Output is correct
7 Correct 167 ms 12668 KB Output is correct
8 Correct 74 ms 8140 KB Output is correct
9 Correct 127 ms 10160 KB Output is correct
10 Correct 79 ms 9020 KB Output is correct
11 Correct 1238 ms 67908 KB Output is correct
12 Correct 85 ms 9328 KB Output is correct
13 Correct 366 ms 23304 KB Output is correct
14 Correct 164 ms 12796 KB Output is correct
15 Correct 1255 ms 66792 KB Output is correct
16 Correct 48 ms 7616 KB Output is correct
17 Correct 895 ms 51244 KB Output is correct
18 Correct 7 ms 4644 KB Output is correct
19 Correct 1361 ms 72028 KB Output is correct
20 Correct 147 ms 12200 KB Output is correct
21 Correct 157 ms 11592 KB Output is correct
22 Correct 67 ms 8812 KB Output is correct
23 Correct 21 ms 6796 KB Output is correct
24 Correct 869 ms 55528 KB Output is correct
25 Correct 104 ms 10180 KB Output is correct
26 Correct 75 ms 8192 KB Output is correct
27 Correct 91 ms 9592 KB Output is correct
28 Correct 13 ms 5652 KB Output is correct
29 Correct 166 ms 12332 KB Output is correct
30 Correct 317 ms 19332 KB Output is correct

Subtask #4
58.0 / 58.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 2 ms 2684 KB Output is correct
5 Correct 3 ms 2676 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 3 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 3 ms 2644 KB Output is correct
15 Correct 2 ms 2684 KB Output is correct
16 Correct 2 ms 2684 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2664 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 2 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 4 ms 2648 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2688 KB Output is correct
31 Correct 3 ms 2684 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2688 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 3 ms 2768 KB Output is correct
37 Correct 4 ms 2900 KB Output is correct
38 Correct 2 ms 2688 KB Output is correct
39 Correct 56 ms 5948 KB Output is correct
40 Correct 8 ms 3464 KB Output is correct
41 Correct 3 ms 2644 KB Output is correct
42 Correct 10 ms 3412 KB Output is correct
43 Correct 4 ms 2772 KB Output is correct
44 Correct 4 ms 2644 KB Output is correct
45 Correct 3 ms 2644 KB Output is correct
46 Correct 35 ms 6228 KB Output is correct
47 Correct 7 ms 3156 KB Output is correct
48 Correct 22 ms 5752 KB Output is correct
49 Correct 24 ms 5936 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 3 ms 2796 KB Output is correct
52 Correct 3 ms 2644 KB Output is correct
53 Correct 15 ms 4372 KB Output is correct
54 Correct 34 ms 5936 KB Output is correct
55 Correct 2 ms 2644 KB Output is correct
56 Correct 2 ms 2644 KB Output is correct
57 Correct 3 ms 2680 KB Output is correct
58 Correct 46 ms 6232 KB Output is correct
59 Correct 2 ms 2684 KB Output is correct
60 Correct 2 ms 2772 KB Output is correct
61 Correct 69 ms 8092 KB Output is correct
62 Correct 7 ms 4436 KB Output is correct
63 Correct 1228 ms 64456 KB Output is correct
64 Correct 565 ms 35180 KB Output is correct
65 Correct 177 ms 12032 KB Output is correct
66 Correct 114 ms 10616 KB Output is correct
67 Correct 167 ms 12668 KB Output is correct
68 Correct 74 ms 8140 KB Output is correct
69 Correct 127 ms 10160 KB Output is correct
70 Correct 79 ms 9020 KB Output is correct
71 Correct 1238 ms 67908 KB Output is correct
72 Correct 85 ms 9328 KB Output is correct
73 Correct 366 ms 23304 KB Output is correct
74 Correct 164 ms 12796 KB Output is correct
75 Correct 1255 ms 66792 KB Output is correct
76 Correct 48 ms 7616 KB Output is correct
77 Correct 895 ms 51244 KB Output is correct
78 Correct 7 ms 4644 KB Output is correct
79 Correct 1361 ms 72028 KB Output is correct
80 Correct 147 ms 12200 KB Output is correct
81 Correct 157 ms 11592 KB Output is correct
82 Correct 67 ms 8812 KB Output is correct
83 Correct 21 ms 6796 KB Output is correct
84 Correct 869 ms 55528 KB Output is correct
85 Correct 104 ms 10180 KB Output is correct
86 Correct 75 ms 8192 KB Output is correct
87 Correct 91 ms 9592 KB Output is correct
88 Correct 13 ms 5652 KB Output is correct
89 Correct 166 ms 12332 KB Output is correct
90 Correct 317 ms 19332 KB Output is correct
91 Correct 143 ms 10260 KB Output is correct
92 Correct 1719 ms 119648 KB Output is correct
93 Correct 220 ms 14308 KB Output is correct
94 Correct 965 ms 70124 KB Output is correct
95 Correct 6 ms 4564 KB Output is correct
96 Correct 10 ms 4740 KB Output is correct
97 Correct 309 ms 18284 KB Output is correct
98 Correct 146 ms 10196 KB Output is correct
99 Correct 136 ms 10972 KB Output is correct
100 Correct 1689 ms 127664 KB Output is correct
101 Correct 714 ms 48032 KB Output is correct
102 Correct 723 ms 47508 KB Output is correct
103 Correct 1129 ms 87712 KB Output is correct
104 Correct 1456 ms 100448 KB Output is correct
105 Correct 81 ms 8308 KB Output is correct
106 Correct 1155 ms 88056 KB Output is correct
107 Correct 452 ms 26260 KB Output is correct
108 Correct 246 ms 13172 KB Output is correct
109 Correct 17 ms 6072 KB Output is correct
110 Correct 58 ms 7808 KB Output is correct
111 Correct 250 ms 13552 KB Output is correct
112 Correct 1761 ms 128020 KB Output is correct
113 Correct 1719 ms 128940 KB Output is correct
114 Correct 220 ms 13192 KB Output is correct
115 Correct 662 ms 45852 KB Output is correct
116 Correct 1600 ms 117260 KB Output is correct
117 Correct 1193 ms 85596 KB Output is correct
118 Correct 1047 ms 76520 KB Output is correct
119 Correct 1499 ms 104392 KB Output is correct
120 Correct 996 ms 62336 KB Output is correct