oj.uz

답안 #887643

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
887643 2023-12-14T22:39:37 Z TAhmed33 Jail (JOI22_jail) C++
5 / 100
 2479 ms 263316 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 120025;
vector <int> adj[MAXN];
vector <int> adj2[501];
int n, m;
int l[501], r[501], deg[501];
vector <int> dd[MAXN];
bool dfs (int pos, int par, int c) {
	if (pos == r[c]) {
		dd[pos].push_back(c);
		return 1;
	}
	bool f = 0;
	for (auto i : adj[pos]) {
		if (i != par) {
			f |= dfs(i, pos, c);
		}
	}
	if (f) dd[pos].push_back(c);
	return f;
}
void reset () {
	for (int i = 1; i <= n; i++) {
		adj[i].clear();
		dd[i].clear();
	}
}
int main () {
	int t = 1; cin >> t;
	while (t--) {
		cin >> n;
		reset();
		for (int i = 1; i < n; i++) {
			int a, b;
			cin >> a >> b;
			adj[a].push_back(b);
			adj[b].push_back(a);
		}
		cin >> m;
		for (int i = 1; i <= m; i++) {
			deg[i] = 0; adj2[i].clear();
		}
		for (int i = 1; i <= m; i++) {
			cin >> l[i] >> r[i];
			dfs(l[i], -1, i);
		}
		for (int i = 1; i <= n; i++) sort(dd[i].begin(), dd[i].end());
		bool flag3 = 0;
		for (int i = 1; i <= m; i++) {
			set <int> y;
			for (auto j : dd[l[i]]) y.insert(j);
			bool u2 = 0;
			for (auto j : dd[r[i]]) u2 |= y.count(j) && j != i;
			flag3 |= u2;
			u2 = 0;
			for (auto j : dd[l[i]]) if (j != i) u2 |= binary_search(dd[l[j]].begin(), dd[l[j]].end(), i);
			for (auto j : dd[r[i]]) if (j != i) u2 |= binary_search(dd[r[j]].begin(), dd[r[j]].end(), i);
			flag3 |= u2;
		}
		/*for (int i = 1; i <= n; i++) {
			for (auto j : dd[i]) cout << j << " ";
			cout << '\n';
		}*/
		if (flag3) {
			cout << "No\n";
			continue;	
		}
		for (int i = 1; i <= m; i++) {
			for (auto j : dd[r[i]]) {
				if (j != i) adj2[i].push_back(j);
			}
		}/*
		cout << '\n' << '\n';
		for (int i = 1; i <= m; i++) {
			for (auto j : adj2[i]) cout << j << " ";
			cout << '\n';
		}*/
		for (int i = 1; i <= m; i++) {
			for (auto j : adj2[i]) {
				deg[j]++;
			}
		}
		vector <int> d;
		queue <int> cur;
		for (int i = 1; i <= m; i++) {
			if (deg[i] == 0) {
				cur.push(i);
			}
		}
		while (!cur.empty()) {
			auto j = cur.front();
			cur.pop();
			d.push_back(j);
			for (auto z : adj2[j]) {
				deg[z]--;
				if (deg[z] == 0) cur.push(z);
			}
		}
		if ((int)d.size() != m) {
			cout << "No\n";
		} else {
			cout << "Yes\n";
		}
	}
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5980 KB Output is correct
2 Correct 2 ms 5980 KB Output is correct
3 Correct 1 ms 5976 KB Output is correct
4 Correct 18 ms 5980 KB Output is correct
5 Correct 37 ms 6608 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 9 ms 6244 KB Output is correct
9 Correct 505 ms 20372 KB Output is correct
10 Correct 2479 ms 263316 KB Output is correct
11 Correct 12 ms 6236 KB Output is correct
12 Correct 122 ms 6876 KB Output is correct
13 Runtime error 66 ms 21072 KB Execution killed with signal 6
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5976 KB Output is correct
2 Correct 3 ms 5980 KB Output is correct
3 Correct 3 ms 5980 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 4 ms 5976 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 3 ms 6232 KB Output is correct
9 Correct 3 ms 5980 KB Output is correct
10 Correct 3 ms 5980 KB Output is correct
11 Correct 3 ms 6388 KB Output is correct
12 Correct 2 ms 5980 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5976 KB Output is correct
2 Correct 3 ms 5980 KB Output is correct
3 Correct 3 ms 5980 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 4 ms 5976 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 3 ms 6232 KB Output is correct
9 Correct 3 ms 5980 KB Output is correct
10 Correct 3 ms 5980 KB Output is correct
11 Correct 3 ms 6388 KB Output is correct
12 Correct 2 ms 5980 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 1 ms 5980 KB Output is correct
15 Correct 2 ms 5980 KB Output is correct
16 Correct 3 ms 5980 KB Output is correct
17 Correct 3 ms 6144 KB Output is correct
18 Correct 3 ms 5976 KB Output is correct
19 Correct 2 ms 6060 KB Output is correct
20 Correct 5 ms 6236 KB Output is correct
21 Correct 3 ms 5980 KB Output is correct
22 Correct 3 ms 6064 KB Output is correct
23 Correct 2 ms 5980 KB Output is correct
24 Incorrect 2 ms 5980 KB Output isn't correct
25 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5976 KB Output is correct
2 Correct 3 ms 5980 KB Output is correct
3 Correct 3 ms 5980 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 4 ms 5976 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 3 ms 6232 KB Output is correct
9 Correct 3 ms 5980 KB Output is correct
10 Correct 3 ms 5980 KB Output is correct
11 Correct 3 ms 6388 KB Output is correct
12 Correct 2 ms 5980 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 1 ms 5980 KB Output is correct
15 Correct 2 ms 5980 KB Output is correct
16 Correct 3 ms 5980 KB Output is correct
17 Correct 3 ms 6144 KB Output is correct
18 Correct 3 ms 5976 KB Output is correct
19 Correct 2 ms 6060 KB Output is correct
20 Correct 5 ms 6236 KB Output is correct
21 Correct 3 ms 5980 KB Output is correct
22 Correct 3 ms 6064 KB Output is correct
23 Correct 2 ms 5980 KB Output is correct
24 Incorrect 2 ms 5980 KB Output isn't correct
25 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5976 KB Output is correct
2 Correct 3 ms 5980 KB Output is correct
3 Correct 3 ms 5980 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 4 ms 5976 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 3 ms 6232 KB Output is correct
9 Correct 3 ms 5980 KB Output is correct
10 Correct 3 ms 5980 KB Output is correct
11 Correct 3 ms 6388 KB Output is correct
12 Correct 2 ms 5980 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 1 ms 5980 KB Output is correct
15 Correct 2 ms 5980 KB Output is correct
16 Correct 3 ms 5980 KB Output is correct
17 Correct 3 ms 6144 KB Output is correct
18 Correct 3 ms 5976 KB Output is correct
19 Correct 2 ms 6060 KB Output is correct
20 Correct 5 ms 6236 KB Output is correct
21 Correct 3 ms 5980 KB Output is correct
22 Correct 3 ms 6064 KB Output is correct
23 Correct 2 ms 5980 KB Output is correct
24 Incorrect 2 ms 5980 KB Output isn't correct
25 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5980 KB Output is correct
2 Correct 2 ms 5980 KB Output is correct
3 Correct 2 ms 5980 KB Output is correct
4 Correct 2 ms 5980 KB Output is correct
5 Correct 12 ms 5980 KB Output is correct
6 Correct 2 ms 5980 KB Output is correct
7 Correct 3 ms 5976 KB Output is correct
8 Correct 2 ms 5980 KB Output is correct
9 Correct 2 ms 5980 KB Output is correct
10 Incorrect 2 ms 5980 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 5980 KB Output is correct
2 Correct 2 ms 5980 KB Output is correct
3 Correct 1 ms 5976 KB Output is correct
4 Correct 18 ms 5980 KB Output is correct
5 Correct 37 ms 6608 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 9 ms 6244 KB Output is correct
9 Correct 505 ms 20372 KB Output is correct
10 Correct 2479 ms 263316 KB Output is correct
11 Correct 12 ms 6236 KB Output is correct
12 Correct 122 ms 6876 KB Output is correct
13 Runtime error 66 ms 21072 KB Execution killed with signal 6
14 Halted 0 ms 0 KB -