oj.uz

Submission #796132

# Submission time Handle Problem Language Result Execution time Memory
796132 2023-07-28T06:47:39 Z 박상훈(#10069) Security Guard (JOI23_guard) C++17
50 / 100
 395 ms 48512 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

constexpr ll INF2 = 4e18;

ll ans;

struct DSU{
	int path[200200];
	void init(int n){for (int i=1;i<=n;i++) path[i] = i;}
	int find(int s){
		if (s==path[s]) return s;
		return path[s] = find(path[s]);
	}
	int merge(int s, int v){
		s = find(s), v = find(v);
		if (s==v) return 0;
		path[v] = s;
		return 1;
	}
}dsu;

vector<int> adj[200200], G[200200];
ll a[200200];
int par[200200], deg[200200];

void dfs(int s, int pa){
	par[s] = pa;
	ans += a[pa];
	for (auto &v:G[s]) if (v!=pa) dfs(v, s);
}

int main(){
	int n, m, q;
	scanf("%d %d %d", &n, &m, &q);

	for (int i=1;i<=n;i++) scanf("%lld", a+i);
	int root = max_element(a+1, a+n+1) - a;
	
	for (int i=1;i<=m;i++){
		int x, y;
		scanf("%d %d", &x, &y);
		adj[x].push_back(y);
		adj[y].push_back(x);
	}

	vector<array<ll, 3>> E;

	dsu.init(n);

	for (int i=1;i<=n;i++){
		for (auto &v:adj[i]) if (dsu.find(i) != dsu.find(v)){
			E.push_back({a[i] + a[v], i, v});
		}
	}

	sort(E.begin(), E.end());

	for (auto &[z, x, y]:E) if (dsu.merge(x, y)){
		G[x].push_back(y);
		G[y].push_back(x);
	}

	ans = 0;
	for (auto &x:G[root]) dfs(x, root);

	printf("%lld\n", ans);
}

Compilation message

guard.cpp: In function 'int main()':
guard.cpp:37:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |  scanf("%d %d %d", &n, &m, &q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
guard.cpp:39:30: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |  for (int i=1;i<=n;i++) scanf("%lld", a+i);
      |                         ~~~~~^~~~~~~~~~~~~
guard.cpp:44:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |   scanf("%d %d", &x, &y);
      |   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 132 ms 44348 KB Output is correct
3 Correct 128 ms 44440 KB Output is correct
4 Correct 141 ms 44376 KB Output is correct
5 Correct 138 ms 44300 KB Output is correct
6 Correct 147 ms 44328 KB Output is correct
7 Correct 139 ms 44272 KB Output is correct
8 Correct 4 ms 9684 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 132 ms 44348 KB Output is correct
3 Correct 128 ms 44440 KB Output is correct
4 Correct 141 ms 44376 KB Output is correct
5 Correct 138 ms 44300 KB Output is correct
6 Correct 147 ms 44328 KB Output is correct
7 Correct 139 ms 44272 KB Output is correct
8 Correct 4 ms 9684 KB Output is correct
9 Correct 4 ms 9684 KB Output is correct
10 Correct 177 ms 40884 KB Output is correct
11 Correct 127 ms 44432 KB Output is correct
12 Correct 125 ms 44452 KB Output is correct
13 Correct 122 ms 44592 KB Output is correct
14 Correct 163 ms 44456 KB Output is correct
15 Correct 187 ms 44444 KB Output is correct
16 Correct 177 ms 43328 KB Output is correct
17 Correct 165 ms 43780 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 132 ms 44348 KB Output is correct
3 Correct 128 ms 44440 KB Output is correct
4 Correct 141 ms 44376 KB Output is correct
5 Correct 138 ms 44300 KB Output is correct
6 Correct 147 ms 44328 KB Output is correct
7 Correct 139 ms 44272 KB Output is correct
8 Correct 4 ms 9684 KB Output is correct
9 Correct 4 ms 9684 KB Output is correct
10 Correct 177 ms 40884 KB Output is correct
11 Correct 127 ms 44432 KB Output is correct
12 Correct 125 ms 44452 KB Output is correct
13 Correct 122 ms 44592 KB Output is correct
14 Correct 163 ms 44456 KB Output is correct
15 Correct 187 ms 44444 KB Output is correct
16 Correct 177 ms 43328 KB Output is correct
17 Correct 165 ms 43780 KB Output is correct
18 Correct 4 ms 9684 KB Output is correct
19 Correct 247 ms 39532 KB Output is correct
20 Correct 232 ms 38908 KB Output is correct
21 Correct 210 ms 35044 KB Output is correct
22 Correct 208 ms 35420 KB Output is correct
23 Correct 178 ms 36912 KB Output is correct
24 Correct 177 ms 36932 KB Output is correct
25 Correct 175 ms 36636 KB Output is correct
26 Correct 170 ms 36588 KB Output is correct
27 Correct 165 ms 36768 KB Output is correct
28 Correct 239 ms 42932 KB Output is correct
29 Correct 203 ms 39200 KB Output is correct
30 Correct 185 ms 37900 KB Output is correct
31 Correct 163 ms 36660 KB Output is correct
32 Correct 217 ms 35988 KB Output is correct
33 Correct 208 ms 34848 KB Output is correct
34 Correct 191 ms 35192 KB Output is correct
35 Correct 195 ms 36916 KB Output is correct
36 Correct 198 ms 36940 KB Output is correct
37 Correct 167 ms 37052 KB Output is correct
38 Correct 197 ms 38876 KB Output is correct
39 Correct 172 ms 40460 KB Output is correct
40 Correct 175 ms 37484 KB Output is correct
41 Correct 230 ms 44496 KB Output is correct
42 Correct 172 ms 44188 KB Output is correct
43 Correct 188 ms 35164 KB Output is correct
44 Correct 236 ms 35412 KB Output is correct
45 Correct 197 ms 35436 KB Output is correct
46 Correct 202 ms 35352 KB Output is correct
47 Correct 224 ms 35524 KB Output is correct
48 Correct 200 ms 35420 KB Output is correct
49 Correct 182 ms 35416 KB Output is correct
50 Correct 200 ms 35448 KB Output is correct
51 Correct 197 ms 35524 KB Output is correct
52 Correct 188 ms 35416 KB Output is correct

Subtask #4
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 132 ms 44348 KB Output is correct
3 Correct 128 ms 44440 KB Output is correct
4 Correct 141 ms 44376 KB Output is correct
5 Correct 138 ms 44300 KB Output is correct
6 Correct 147 ms 44328 KB Output is correct
7 Correct 139 ms 44272 KB Output is correct
8 Correct 4 ms 9684 KB Output is correct
9 Correct 4 ms 9684 KB Output is correct
10 Correct 177 ms 40884 KB Output is correct
11 Correct 127 ms 44432 KB Output is correct
12 Correct 125 ms 44452 KB Output is correct
13 Correct 122 ms 44592 KB Output is correct
14 Correct 163 ms 44456 KB Output is correct
15 Correct 187 ms 44444 KB Output is correct
16 Correct 177 ms 43328 KB Output is correct
17 Correct 165 ms 43780 KB Output is correct
18 Correct 4 ms 9684 KB Output is correct
19 Correct 247 ms 39532 KB Output is correct
20 Correct 232 ms 38908 KB Output is correct
21 Correct 210 ms 35044 KB Output is correct
22 Correct 208 ms 35420 KB Output is correct
23 Correct 178 ms 36912 KB Output is correct
24 Correct 177 ms 36932 KB Output is correct
25 Correct 175 ms 36636 KB Output is correct
26 Correct 170 ms 36588 KB Output is correct
27 Correct 165 ms 36768 KB Output is correct
28 Correct 239 ms 42932 KB Output is correct
29 Correct 203 ms 39200 KB Output is correct
30 Correct 185 ms 37900 KB Output is correct
31 Correct 163 ms 36660 KB Output is correct
32 Correct 217 ms 35988 KB Output is correct
33 Correct 208 ms 34848 KB Output is correct
34 Correct 191 ms 35192 KB Output is correct
35 Correct 195 ms 36916 KB Output is correct
36 Correct 198 ms 36940 KB Output is correct
37 Correct 167 ms 37052 KB Output is correct
38 Correct 197 ms 38876 KB Output is correct
39 Correct 172 ms 40460 KB Output is correct
40 Correct 175 ms 37484 KB Output is correct
41 Correct 230 ms 44496 KB Output is correct
42 Correct 172 ms 44188 KB Output is correct
43 Correct 188 ms 35164 KB Output is correct
44 Correct 236 ms 35412 KB Output is correct
45 Correct 197 ms 35436 KB Output is correct
46 Correct 202 ms 35352 KB Output is correct
47 Correct 224 ms 35524 KB Output is correct
48 Correct 200 ms 35420 KB Output is correct
49 Correct 182 ms 35416 KB Output is correct
50 Correct 200 ms 35448 KB Output is correct
51 Correct 197 ms 35524 KB Output is correct
52 Correct 188 ms 35416 KB Output is correct
53 Correct 5 ms 9684 KB Output is correct
54 Correct 224 ms 40224 KB Output is correct
55 Correct 218 ms 39420 KB Output is correct
56 Correct 247 ms 44104 KB Output is correct
57 Correct 323 ms 46812 KB Output is correct
58 Correct 313 ms 48208 KB Output is correct
59 Correct 305 ms 48088 KB Output is correct
60 Correct 224 ms 44924 KB Output is correct
61 Correct 292 ms 46944 KB Output is correct
62 Correct 330 ms 46936 KB Output is correct
63 Correct 232 ms 43528 KB Output is correct
64 Correct 288 ms 45536 KB Output is correct
65 Correct 315 ms 48512 KB Output is correct
66 Correct 321 ms 47468 KB Output is correct
67 Correct 383 ms 46948 KB Output is correct
68 Correct 188 ms 35048 KB Output is correct
69 Correct 331 ms 44792 KB Output is correct
70 Correct 209 ms 38024 KB Output is correct
71 Correct 207 ms 37228 KB Output is correct
72 Correct 192 ms 37156 KB Output is correct
73 Correct 204 ms 38760 KB Output is correct
74 Correct 175 ms 40444 KB Output is correct
75 Correct 189 ms 37616 KB Output is correct
76 Correct 185 ms 44344 KB Output is correct
77 Correct 199 ms 44368 KB Output is correct
78 Correct 256 ms 36184 KB Output is correct
79 Correct 334 ms 46820 KB Output is correct
80 Correct 255 ms 38636 KB Output is correct
81 Correct 323 ms 45224 KB Output is correct
82 Correct 395 ms 46864 KB Output is correct
83 Correct 360 ms 46924 KB Output is correct
84 Correct 354 ms 46268 KB Output is correct
85 Correct 186 ms 35412 KB Output is correct
86 Correct 187 ms 35496 KB Output is correct
87 Correct 172 ms 35364 KB Output is correct
88 Correct 368 ms 46188 KB Output is correct

Subtask #5
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Incorrect 5 ms 9684 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Incorrect 5 ms 9684 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 132 ms 44348 KB Output is correct
3 Correct 128 ms 44440 KB Output is correct
4 Correct 141 ms 44376 KB Output is correct
5 Correct 138 ms 44300 KB Output is correct
6 Correct 147 ms 44328 KB Output is correct
7 Correct 139 ms 44272 KB Output is correct
8 Correct 4 ms 9684 KB Output is correct
9 Correct 4 ms 9684 KB Output is correct
10 Correct 177 ms 40884 KB Output is correct
11 Correct 127 ms 44432 KB Output is correct
12 Correct 125 ms 44452 KB Output is correct
13 Correct 122 ms 44592 KB Output is correct
14 Correct 163 ms 44456 KB Output is correct
15 Correct 187 ms 44444 KB Output is correct
16 Correct 177 ms 43328 KB Output is correct
17 Correct 165 ms 43780 KB Output is correct
18 Correct 4 ms 9684 KB Output is correct
19 Correct 247 ms 39532 KB Output is correct
20 Correct 232 ms 38908 KB Output is correct
21 Correct 210 ms 35044 KB Output is correct
22 Correct 208 ms 35420 KB Output is correct
23 Correct 178 ms 36912 KB Output is correct
24 Correct 177 ms 36932 KB Output is correct
25 Correct 175 ms 36636 KB Output is correct
26 Correct 170 ms 36588 KB Output is correct
27 Correct 165 ms 36768 KB Output is correct
28 Correct 239 ms 42932 KB Output is correct
29 Correct 203 ms 39200 KB Output is correct
30 Correct 185 ms 37900 KB Output is correct
31 Correct 163 ms 36660 KB Output is correct
32 Correct 217 ms 35988 KB Output is correct
33 Correct 208 ms 34848 KB Output is correct
34 Correct 191 ms 35192 KB Output is correct
35 Correct 195 ms 36916 KB Output is correct
36 Correct 198 ms 36940 KB Output is correct
37 Correct 167 ms 37052 KB Output is correct
38 Correct 197 ms 38876 KB Output is correct
39 Correct 172 ms 40460 KB Output is correct
40 Correct 175 ms 37484 KB Output is correct
41 Correct 230 ms 44496 KB Output is correct
42 Correct 172 ms 44188 KB Output is correct
43 Correct 188 ms 35164 KB Output is correct
44 Correct 236 ms 35412 KB Output is correct
45 Correct 197 ms 35436 KB Output is correct
46 Correct 202 ms 35352 KB Output is correct
47 Correct 224 ms 35524 KB Output is correct
48 Correct 200 ms 35420 KB Output is correct
49 Correct 182 ms 35416 KB Output is correct
50 Correct 200 ms 35448 KB Output is correct
51 Correct 197 ms 35524 KB Output is correct
52 Correct 188 ms 35416 KB Output is correct
53 Correct 5 ms 9684 KB Output is correct
54 Correct 224 ms 40224 KB Output is correct
55 Correct 218 ms 39420 KB Output is correct
56 Correct 247 ms 44104 KB Output is correct
57 Correct 323 ms 46812 KB Output is correct
58 Correct 313 ms 48208 KB Output is correct
59 Correct 305 ms 48088 KB Output is correct
60 Correct 224 ms 44924 KB Output is correct
61 Correct 292 ms 46944 KB Output is correct
62 Correct 330 ms 46936 KB Output is correct
63 Correct 232 ms 43528 KB Output is correct
64 Correct 288 ms 45536 KB Output is correct
65 Correct 315 ms 48512 KB Output is correct
66 Correct 321 ms 47468 KB Output is correct
67 Correct 383 ms 46948 KB Output is correct
68 Correct 188 ms 35048 KB Output is correct
69 Correct 331 ms 44792 KB Output is correct
70 Correct 209 ms 38024 KB Output is correct
71 Correct 207 ms 37228 KB Output is correct
72 Correct 192 ms 37156 KB Output is correct
73 Correct 204 ms 38760 KB Output is correct
74 Correct 175 ms 40444 KB Output is correct
75 Correct 189 ms 37616 KB Output is correct
76 Correct 185 ms 44344 KB Output is correct
77 Correct 199 ms 44368 KB Output is correct
78 Correct 256 ms 36184 KB Output is correct
79 Correct 334 ms 46820 KB Output is correct
80 Correct 255 ms 38636 KB Output is correct
81 Correct 323 ms 45224 KB Output is correct
82 Correct 395 ms 46864 KB Output is correct
83 Correct 360 ms 46924 KB Output is correct
84 Correct 354 ms 46268 KB Output is correct
85 Correct 186 ms 35412 KB Output is correct
86 Correct 187 ms 35496 KB Output is correct
87 Correct 172 ms 35364 KB Output is correct
88 Correct 368 ms 46188 KB Output is correct
89 Correct 5 ms 9684 KB Output is correct
90 Incorrect 5 ms 9684 KB Output isn't correct
91 Halted 0 ms 0 KB -