oj.uz

Submission #1102778

# Submission time Handle Problem Language Result Execution time Memory
1102778 2024-10-18T21:13:26 Z Bula Jail (JOI22_jail) C++17
72 / 100
 5000 ms 558120 KB 
#include <bits/stdc++.h>
using namespace std;

main(){
	int tt = 1; cin >> tt;
	while(tt--){
		int n;
		cin >> n;
		vector<int> adj[n + 1];
		for(int i = 1; i <= n - 1; i++){
			int x, y;
			cin >> x >> y;
			adj[x].push_back(y);
			adj[y].push_back(x);
		}
		vector<int> par(n + 1), d(n + 1);
		function<void(int, int)> dfs = [&](int v, int p){
			par[v] = p; d[v] = d[p] + 1;
			for(auto x : adj[v]){
				if(x == p) continue;
				dfs(x, v);
			}
		};
		dfs(1, 0);
		int q;
		cin >> q;
		vector<int> a(q + 1), b(q + 1), g[n + 1], s[n + 1];
		for(int i = 1; i <= q; i++){
			cin >> a[i] >> b[i];
			g[b[i]].push_back(i);
			s[a[i]].push_back(i);
		}
		int ok = 1;
		vector<int> G[q + 1], in(q + 1);
		for(int i = 1; i <= q; i++){
			vector<int> m(q + 1);
			int x = a[i], y = b[i];
			while(x != y){
				if(d[x] < d[y]) swap(x, y);
				for(auto u : g[x]){
					if(u == i) continue;
					G[i].push_back(u);
					in[u]++;
					m[u]++;
					if(m[u] == 2) ok = 0;
				}
				for(auto u : s[x]){
					if(u == i) continue;
					G[u].push_back(i);
					in[i]++;
					m[u]++;
					if(m[u] == 2) ok = 0;
				}
				x = par[x];
			}
			for(auto u : g[x]){
				if(u == i) continue;
				G[i].push_back(u);
				in[u]++;
				m[u]++;
				if(m[u] == 2) ok = 0;
			}
			for(auto u : s[x]){
				if(u == i) continue;
				G[u].push_back(i);
				in[i]++;
				m[u]++;
				if(m[u] == 2) ok = 0;
			}
		}
		queue<int> Q;
		for(int i = 1; i <= q; i++){
			if(in[i] == 0) Q.push(i);
		}
		vector<int> p;
		while(!Q.empty()){
			int v = Q.front();
			Q.pop();
			p.push_back(v);
			for(auto x : G[v]){
				in[x]--;
				if(in[x] == 0) Q.push(x);
			}
		}
		if(p.size() != q) ok = 0;
		cout << (ok ? "Yes" : "No") << '\n';
	}
}

Compilation message

jail.cpp:4:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 | main(){
      | ^~~~
jail.cpp: In function 'int main()':
jail.cpp:85:15: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   85 |   if(p.size() != q) ok = 0;
      |      ~~~~~~~~~^~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 16 ms 336 KB Output is correct
5 Correct 38 ms 1108 KB Output is correct
6 Correct 3 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 4 ms 596 KB Output is correct
9 Correct 132 ms 3928 KB Output is correct
10 Correct 340 ms 20044 KB Output is correct
11 Correct 11 ms 340 KB Output is correct
12 Correct 63 ms 1532 KB Output is correct
13 Correct 317 ms 53272 KB Output is correct
14 Correct 347 ms 66696 KB Output is correct
15 Execution timed out 5103 ms 558120 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 484 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 3 ms 340 KB Output is correct
10 Correct 2 ms 424 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 552 KB Output is correct
13 Correct 2 ms 340 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 484 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 3 ms 340 KB Output is correct
10 Correct 2 ms 424 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 552 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 3 ms 340 KB Output is correct
22 Correct 3 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 3 ms 340 KB Output is correct
26 Correct 1 ms 504 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 484 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 3 ms 340 KB Output is correct
10 Correct 2 ms 424 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 552 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 3 ms 340 KB Output is correct
22 Correct 3 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 3 ms 340 KB Output is correct
26 Correct 1 ms 504 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 4 ms 596 KB Output is correct
30 Correct 4 ms 340 KB Output is correct
31 Correct 4 ms 340 KB Output is correct
32 Correct 3 ms 340 KB Output is correct
33 Correct 3 ms 340 KB Output is correct
34 Correct 3 ms 340 KB Output is correct
35 Correct 5 ms 340 KB Output is correct
36 Correct 3 ms 340 KB Output is correct
37 Correct 4 ms 340 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 3 ms 340 KB Output is correct
6 Correct 2 ms 484 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 3 ms 340 KB Output is correct
10 Correct 2 ms 424 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 552 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 340 KB Output is correct
17 Correct 3 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 3 ms 340 KB Output is correct
22 Correct 3 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 3 ms 340 KB Output is correct
26 Correct 1 ms 504 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 4 ms 596 KB Output is correct
30 Correct 4 ms 340 KB Output is correct
31 Correct 4 ms 340 KB Output is correct
32 Correct 3 ms 340 KB Output is correct
33 Correct 3 ms 340 KB Output is correct
34 Correct 3 ms 340 KB Output is correct
35 Correct 5 ms 340 KB Output is correct
36 Correct 3 ms 340 KB Output is correct
37 Correct 4 ms 340 KB Output is correct
38 Correct 127 ms 3984 KB Output is correct
39 Correct 351 ms 20156 KB Output is correct
40 Correct 81 ms 2804 KB Output is correct
41 Correct 51 ms 2124 KB Output is correct
42 Correct 68 ms 2636 KB Output is correct
43 Correct 42 ms 2132 KB Output is correct
44 Correct 14 ms 852 KB Output is correct
45 Correct 63 ms 14896 KB Output is correct
46 Correct 71 ms 14964 KB Output is correct
47 Correct 101 ms 14924 KB Output is correct
48 Correct 104 ms 14924 KB Output is correct
49 Correct 69 ms 15040 KB Output is correct
50 Correct 69 ms 15028 KB Output is correct
51 Correct 57 ms 14936 KB Output is correct
52 Correct 73 ms 14924 KB Output is correct
53 Correct 15 ms 1620 KB Output is correct
54 Correct 70 ms 15056 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 11 ms 552 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 504 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 4 ms 340 KB Output is correct
13 Correct 34 ms 824 KB Output is correct
14 Correct 46 ms 1100 KB Output is correct
15 Correct 40 ms 1084 KB Output is correct
16 Correct 75 ms 16460 KB Output is correct
17 Correct 359 ms 27240 KB Output is correct
18 Correct 1362 ms 52796 KB Output is correct
19 Correct 102 ms 17744 KB Output is correct
20 Correct 101 ms 17752 KB Output is correct
21 Correct 109 ms 17740 KB Output is correct
22 Correct 385 ms 27764 KB Output is correct
23 Correct 324 ms 28020 KB Output is correct
24 Correct 334 ms 27956 KB Output is correct
25 Correct 376 ms 28244 KB Output is correct
26 Correct 349 ms 27996 KB Output is correct
27 Correct 1075 ms 33512 KB Output is correct
28 Correct 972 ms 32836 KB Output is correct
29 Correct 988 ms 32868 KB Output is correct
30 Correct 306 ms 24232 KB Output is correct
31 Correct 281 ms 23832 KB Output is correct
32 Correct 322 ms 24284 KB Output is correct
33 Correct 339 ms 23816 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 0 ms 336 KB Output is correct
4 Correct 16 ms 336 KB Output is correct
5 Correct 38 ms 1108 KB Output is correct
6 Correct 3 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 4 ms 596 KB Output is correct
9 Correct 132 ms 3928 KB Output is correct
10 Correct 340 ms 20044 KB Output is correct
11 Correct 11 ms 340 KB Output is correct
12 Correct 63 ms 1532 KB Output is correct
13 Correct 317 ms 53272 KB Output is correct
14 Correct 347 ms 66696 KB Output is correct
15 Execution timed out 5103 ms 558120 KB Time limit exceeded
16 Halted 0 ms 0 KB -