oj.uz

답안 #887646

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
887646 2023-12-14T23:42:18 Z TAhmed33 Jail (JOI22_jail) C++
61 / 100
 3317 ms 1048576 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];
vector <int> ls[501];
bool dfs (int pos, int par, int c) {
	if (pos == r[c]) {
		dd[pos].push_back(c);
		ls[c].push_back(pos);
		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);
		ls[c].push_back(pos);
	}
	return f;
}
int mx1[MAXN], mx2[MAXN];
void solve () {
	cin >> m;
	vector <pair <int, int>> gg, ff, xx;
	for (int i = 0; i < m; i++) {
		int l, r;
		cin >> l >> r;
		if (r < l) ff.push_back({r, l}), swap(l, r);
		else gg.push_back({l, r});
		xx.push_back({l, r});
	}
	for (int i = 0; i <= n; i++) mx1[i] = mx2[i] = 0;
	sort(xx.begin(), xx.end(), [] (pair <int, int> a, pair <int, int> b) {
		return a.first == b.first ? a.second > b.second : a.first < b.first;
	});
	reverse(xx.begin(), xx.end());
	set <int> dd;
	bool flag = 0;
	for (auto [j, k] : xx) {
		//cout << j << " " << k << '\n';
		if (!dd.empty()) flag |= *(dd.begin()) <= k;
		dd.insert(k);
	}
	if (flag) {
		cout << "No\n";
		return;
	}
	for (auto [j, k] : gg) {
		mx1[j] = max(mx1[j], k);
	}
	for (auto [j, k] : ff) {
		mx2[j] = max(mx2[j], k);
	}
	for (int i = n - 1; i >= 1; i--) {
		mx1[i] = max(mx1[i], mx1[i - 1]);
		mx2[i] = max(mx2[i], mx2[i - 1]);
	}
	for (auto [j, k] : gg) {
		flag |= mx2[j] >= k;
	}
	for (auto [j, k] : ff) {
		flag |= mx1[j] >= k;
	}
	cout << (flag ? "No\n" : "Yes\n");
}
int main () {
	ios::sync_with_stdio(0); cin.tie(0);
	int t = 1; cin >> t;
	while (t--) {
		cin >> n;
		bool flag6 = 1;
		for (int i = 1; i <= n; i++) {
			adj[i].clear();
			dd[i].clear();
		}
		for (int i = 1; i < n; i++) {
			int a, b;
			cin >> a >> b;
			flag6 &= a == i && b == i + 1;
			adj[a].push_back(b);
			adj[b].push_back(a);
		}
		//if (flag6) {
		///	solve();
		//	continue;
		//}
		cin >> m;
		for (int i = 1; i <= m; i++) {
			deg[i] = 0; adj2[i].clear(); ls[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;
		}
		if (flag3) {
			cout << "No\n";
			continue;	
		}
		for (int i = 1; i <= m; i++) sort(ls[i].begin(), ls[i].end());
		for (int i = 1; i <= m; i++) {
			for (int j = 1; j <= m; j++) {
				if (i == j) continue;
				bool flag = 0;
				flag |= binary_search(ls[i].begin(), ls[i].end(), l[j]);
				flag |= binary_search(ls[j].begin(), ls[j].end(), r[i]);
				if (flag) adj2[i].push_back(j);
			}
		}
		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";
		}
	}
}

Compilation message

jail.cpp: In function 'void solve()':
jail.cpp:46:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   46 |  for (auto [j, k] : xx) {
      |            ^
jail.cpp:55:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   55 |  for (auto [j, k] : gg) {
      |            ^
jail.cpp:58:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   58 |  for (auto [j, k] : ff) {
      |            ^
jail.cpp:65:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   65 |  for (auto [j, k] : gg) {
      |            ^
jail.cpp:68:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   68 |  for (auto [j, k] : ff) {
      |            ^

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 8 ms 7256 KB Output is correct
5 Correct 14 ms 6916 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 2 ms 6748 KB Output is correct
8 Correct 10 ms 7004 KB Output is correct
9 Correct 603 ms 33872 KB Output is correct
10 Correct 3317 ms 495376 KB Output is correct
11 Correct 7 ms 6748 KB Output is correct
12 Correct 109 ms 7008 KB Output is correct
13 Runtime error 32 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 6744 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 3 ms 6748 KB Output is correct
4 Correct 2 ms 6920 KB Output is correct
5 Correct 2 ms 6748 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 3 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 2 ms 6748 KB Output is correct
12 Correct 2 ms 6748 KB Output is correct
13 Correct 2 ms 6748 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 3 ms 6748 KB Output is correct
4 Correct 2 ms 6920 KB Output is correct
5 Correct 2 ms 6748 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 3 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 2 ms 6748 KB Output is correct
12 Correct 2 ms 6748 KB Output is correct
13 Correct 2 ms 6748 KB Output is correct
14 Correct 1 ms 6748 KB Output is correct
15 Correct 1 ms 6748 KB Output is correct
16 Correct 2 ms 6748 KB Output is correct
17 Correct 2 ms 6748 KB Output is correct
18 Correct 2 ms 6748 KB Output is correct
19 Correct 2 ms 6748 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 2 ms 6748 KB Output is correct
22 Correct 2 ms 6748 KB Output is correct
23 Correct 2 ms 6748 KB Output is correct
24 Correct 2 ms 6872 KB Output is correct
25 Correct 3 ms 6748 KB Output is correct
26 Correct 2 ms 6748 KB Output is correct
27 Correct 2 ms 6748 KB Output is correct
28 Correct 2 ms 6872 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 3 ms 6748 KB Output is correct
4 Correct 2 ms 6920 KB Output is correct
5 Correct 2 ms 6748 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 3 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 2 ms 6748 KB Output is correct
12 Correct 2 ms 6748 KB Output is correct
13 Correct 2 ms 6748 KB Output is correct
14 Correct 1 ms 6748 KB Output is correct
15 Correct 1 ms 6748 KB Output is correct
16 Correct 2 ms 6748 KB Output is correct
17 Correct 2 ms 6748 KB Output is correct
18 Correct 2 ms 6748 KB Output is correct
19 Correct 2 ms 6748 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 2 ms 6748 KB Output is correct
22 Correct 2 ms 6748 KB Output is correct
23 Correct 2 ms 6748 KB Output is correct
24 Correct 2 ms 6872 KB Output is correct
25 Correct 3 ms 6748 KB Output is correct
26 Correct 2 ms 6748 KB Output is correct
27 Correct 2 ms 6748 KB Output is correct
28 Correct 2 ms 6872 KB Output is correct
29 Correct 9 ms 7004 KB Output is correct
30 Correct 4 ms 6748 KB Output is correct
31 Correct 5 ms 7000 KB Output is correct
32 Correct 5 ms 6972 KB Output is correct
33 Correct 2 ms 6748 KB Output is correct
34 Correct 6 ms 6748 KB Output is correct
35 Correct 10 ms 7004 KB Output is correct
36 Correct 7 ms 6748 KB Output is correct
37 Correct 8 ms 6748 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 3 ms 6748 KB Output is correct
4 Correct 2 ms 6920 KB Output is correct
5 Correct 2 ms 6748 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 3 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 2 ms 6748 KB Output is correct
12 Correct 2 ms 6748 KB Output is correct
13 Correct 2 ms 6748 KB Output is correct
14 Correct 1 ms 6748 KB Output is correct
15 Correct 1 ms 6748 KB Output is correct
16 Correct 2 ms 6748 KB Output is correct
17 Correct 2 ms 6748 KB Output is correct
18 Correct 2 ms 6748 KB Output is correct
19 Correct 2 ms 6748 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 2 ms 6748 KB Output is correct
22 Correct 2 ms 6748 KB Output is correct
23 Correct 2 ms 6748 KB Output is correct
24 Correct 2 ms 6872 KB Output is correct
25 Correct 3 ms 6748 KB Output is correct
26 Correct 2 ms 6748 KB Output is correct
27 Correct 2 ms 6748 KB Output is correct
28 Correct 2 ms 6872 KB Output is correct
29 Correct 9 ms 7004 KB Output is correct
30 Correct 4 ms 6748 KB Output is correct
31 Correct 5 ms 7000 KB Output is correct
32 Correct 5 ms 6972 KB Output is correct
33 Correct 2 ms 6748 KB Output is correct
34 Correct 6 ms 6748 KB Output is correct
35 Correct 10 ms 7004 KB Output is correct
36 Correct 7 ms 6748 KB Output is correct
37 Correct 8 ms 6748 KB Output is correct
38 Correct 556 ms 33996 KB Output is correct
39 Correct 3204 ms 495524 KB Output is correct
40 Correct 754 ms 18004 KB Output is correct
41 Correct 705 ms 7504 KB Output is correct
42 Correct 364 ms 17232 KB Output is correct
43 Correct 44 ms 7260 KB Output is correct
44 Correct 109 ms 7000 KB Output is correct
45 Correct 1638 ms 11612 KB Output is correct
46 Correct 1655 ms 12112 KB Output is correct
47 Correct 1117 ms 102052 KB Output is correct
48 Correct 1143 ms 104980 KB Output is correct
49 Correct 1136 ms 16212 KB Output is correct
50 Correct 1188 ms 16420 KB Output is correct
51 Correct 184 ms 12180 KB Output is correct
52 Correct 207 ms 12112 KB Output is correct
53 Correct 126 ms 7268 KB Output is correct
54 Correct 1275 ms 10788 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 1 ms 6840 KB Output is correct
3 Correct 2 ms 6744 KB Output is correct
4 Correct 1 ms 6748 KB Output is correct
5 Correct 7 ms 6748 KB Output is correct
6 Correct 2 ms 6744 KB Output is correct
7 Correct 2 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 1 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 1 ms 6744 KB Output is correct
12 Correct 6 ms 6748 KB Output is correct
13 Correct 39 ms 6932 KB Output is correct
14 Correct 60 ms 6904 KB Output is correct
15 Correct 53 ms 6748 KB Output is correct
16 Runtime error 1155 ms 1048576 KB Execution killed with signal 9
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 8 ms 7256 KB Output is correct
5 Correct 14 ms 6916 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 2 ms 6748 KB Output is correct
8 Correct 10 ms 7004 KB Output is correct
9 Correct 603 ms 33872 KB Output is correct
10 Correct 3317 ms 495376 KB Output is correct
11 Correct 7 ms 6748 KB Output is correct
12 Correct 109 ms 7008 KB Output is correct
13 Runtime error 32 ms 21072 KB Execution killed with signal 6
14 Halted 0 ms 0 KB -