oj.uz

Submission #887649

# Submission time Handle Problem Language Result Execution time Memory
887649 2023-12-14T23:51:23 Z TAhmed33 Jail (JOI22_jail) C++
66 / 100
 1797 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 + 1; 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 = 1; i <= n; 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] >= j;
	}
	for (auto [j, k] : ff) {
		flag |= mx1[j] >= j;
	}
	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
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6752 KB Output is correct
2 Correct 1 ms 6744 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 7 ms 6748 KB Output is correct
5 Correct 12 ms 6748 KB Output is correct
6 Correct 2 ms 6908 KB Output is correct
7 Correct 2 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 17 ms 7004 KB Output is correct
10 Correct 26 ms 11092 KB Output is correct
11 Correct 4 ms 6748 KB Output is correct
12 Correct 19 ms 6916 KB Output is correct
13 Correct 38 ms 14208 KB Output is correct
14 Correct 37 ms 15964 KB Output is correct
15 Correct 54 ms 15428 KB Output is correct
16 Correct 76 ms 19256 KB Output is correct
17 Correct 41 ms 16584 KB Output is correct
18 Correct 61 ms 21100 KB Output is correct
19 Correct 40 ms 16504 KB Output is correct
20 Correct 40 ms 16500 KB Output is correct
21 Correct 55 ms 16572 KB Output is correct
22 Correct 40 ms 16504 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 1 ms 6744 KB Output is correct
3 Correct 2 ms 6748 KB Output is correct
4 Correct 2 ms 6748 KB Output is correct
5 Correct 2 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 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 3 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

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 1 ms 6744 KB Output is correct
3 Correct 2 ms 6748 KB Output is correct
4 Correct 2 ms 6748 KB Output is correct
5 Correct 2 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 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 3 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 6776 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 1 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 1 ms 6744 KB Output is correct
24 Correct 1 ms 6748 KB Output is correct
25 Correct 2 ms 6748 KB Output is correct
26 Correct 1 ms 6748 KB Output is correct
27 Correct 2 ms 6924 KB Output is correct
28 Correct 2 ms 6744 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 1 ms 6744 KB Output is correct
3 Correct 2 ms 6748 KB Output is correct
4 Correct 2 ms 6748 KB Output is correct
5 Correct 2 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 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 3 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 6776 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 1 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 1 ms 6744 KB Output is correct
24 Correct 1 ms 6748 KB Output is correct
25 Correct 2 ms 6748 KB Output is correct
26 Correct 1 ms 6748 KB Output is correct
27 Correct 2 ms 6924 KB Output is correct
28 Correct 2 ms 6744 KB Output is correct
29 Correct 2 ms 6744 KB Output is correct
30 Correct 4 ms 7188 KB Output is correct
31 Correct 5 ms 7004 KB Output is correct
32 Correct 5 ms 6840 KB Output is correct
33 Correct 2 ms 6748 KB Output is correct
34 Correct 8 ms 6748 KB Output is correct
35 Correct 10 ms 7004 KB Output is correct
36 Correct 7 ms 6940 KB Output is correct
37 Correct 7 ms 6744 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 1 ms 6744 KB Output is correct
3 Correct 2 ms 6748 KB Output is correct
4 Correct 2 ms 6748 KB Output is correct
5 Correct 2 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 2 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 3 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 6776 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 1 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 1 ms 6744 KB Output is correct
24 Correct 1 ms 6748 KB Output is correct
25 Correct 2 ms 6748 KB Output is correct
26 Correct 1 ms 6748 KB Output is correct
27 Correct 2 ms 6924 KB Output is correct
28 Correct 2 ms 6744 KB Output is correct
29 Correct 2 ms 6744 KB Output is correct
30 Correct 4 ms 7188 KB Output is correct
31 Correct 5 ms 7004 KB Output is correct
32 Correct 5 ms 6840 KB Output is correct
33 Correct 2 ms 6748 KB Output is correct
34 Correct 8 ms 6748 KB Output is correct
35 Correct 10 ms 7004 KB Output is correct
36 Correct 7 ms 6940 KB Output is correct
37 Correct 7 ms 6744 KB Output is correct
38 Correct 16 ms 7004 KB Output is correct
39 Correct 23 ms 10844 KB Output is correct
40 Correct 758 ms 17932 KB Output is correct
41 Correct 694 ms 7816 KB Output is correct
42 Correct 357 ms 17492 KB Output is correct
43 Correct 42 ms 7256 KB Output is correct
44 Correct 105 ms 7004 KB Output is correct
45 Correct 1797 ms 12012 KB Output is correct
46 Correct 1733 ms 11604 KB Output is correct
47 Correct 1083 ms 102252 KB Output is correct
48 Correct 1092 ms 105000 KB Output is correct
49 Correct 1085 ms 16312 KB Output is correct
50 Correct 1127 ms 16484 KB Output is correct
51 Correct 187 ms 11936 KB Output is correct
52 Correct 200 ms 11868 KB Output is correct
53 Correct 127 ms 7560 KB Output is correct
54 Correct 1285 ms 10992 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6748 KB Output is correct
2 Correct 2 ms 6744 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 1 ms 6748 KB Output is correct
5 Correct 5 ms 6748 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 2 ms 6784 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 2 ms 6748 KB Output is correct
10 Correct 1 ms 6836 KB Output is correct
11 Correct 1 ms 7000 KB Output is correct
12 Correct 6 ms 6744 KB Output is correct
13 Correct 39 ms 7000 KB Output is correct
14 Correct 58 ms 6908 KB Output is correct
15 Correct 53 ms 6748 KB Output is correct
16 Runtime error 1088 ms 1048576 KB Execution killed with signal 9
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6752 KB Output is correct
2 Correct 1 ms 6744 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 7 ms 6748 KB Output is correct
5 Correct 12 ms 6748 KB Output is correct
6 Correct 2 ms 6908 KB Output is correct
7 Correct 2 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 17 ms 7004 KB Output is correct
10 Correct 26 ms 11092 KB Output is correct
11 Correct 4 ms 6748 KB Output is correct
12 Correct 19 ms 6916 KB Output is correct
13 Correct 38 ms 14208 KB Output is correct
14 Correct 37 ms 15964 KB Output is correct
15 Correct 54 ms 15428 KB Output is correct
16 Correct 76 ms 19256 KB Output is correct
17 Correct 41 ms 16584 KB Output is correct
18 Correct 61 ms 21100 KB Output is correct
19 Correct 40 ms 16504 KB Output is correct
20 Correct 40 ms 16500 KB Output is correct
21 Correct 55 ms 16572 KB Output is correct
22 Correct 40 ms 16504 KB Output is correct
23 Correct 1 ms 6744 KB Output is correct
24 Correct 1 ms 6744 KB Output is correct
25 Correct 2 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 6744 KB Output is correct
29 Correct 2 ms 6748 KB Output is correct
30 Correct 2 ms 6748 KB Output is correct
31 Correct 2 ms 6748 KB Output is correct
32 Correct 2 ms 6748 KB Output is correct
33 Correct 3 ms 6748 KB Output is correct
34 Correct 2 ms 6748 KB Output is correct
35 Correct 2 ms 6748 KB Output is correct
36 Correct 1 ms 6748 KB Output is correct
37 Correct 1 ms 6776 KB Output is correct
38 Correct 2 ms 6748 KB Output is correct
39 Correct 2 ms 6748 KB Output is correct
40 Correct 2 ms 6748 KB Output is correct
41 Correct 1 ms 6748 KB Output is correct
42 Correct 2 ms 6748 KB Output is correct
43 Correct 2 ms 6748 KB Output is correct
44 Correct 2 ms 6748 KB Output is correct
45 Correct 1 ms 6744 KB Output is correct
46 Correct 1 ms 6748 KB Output is correct
47 Correct 2 ms 6748 KB Output is correct
48 Correct 1 ms 6748 KB Output is correct
49 Correct 2 ms 6924 KB Output is correct
50 Correct 2 ms 6744 KB Output is correct
51 Correct 2 ms 6744 KB Output is correct
52 Correct 4 ms 7188 KB Output is correct
53 Correct 5 ms 7004 KB Output is correct
54 Correct 5 ms 6840 KB Output is correct
55 Correct 2 ms 6748 KB Output is correct
56 Correct 8 ms 6748 KB Output is correct
57 Correct 10 ms 7004 KB Output is correct
58 Correct 7 ms 6940 KB Output is correct
59 Correct 7 ms 6744 KB Output is correct
60 Correct 16 ms 7004 KB Output is correct
61 Correct 23 ms 10844 KB Output is correct
62 Correct 758 ms 17932 KB Output is correct
63 Correct 694 ms 7816 KB Output is correct
64 Correct 357 ms 17492 KB Output is correct
65 Correct 42 ms 7256 KB Output is correct
66 Correct 105 ms 7004 KB Output is correct
67 Correct 1797 ms 12012 KB Output is correct
68 Correct 1733 ms 11604 KB Output is correct
69 Correct 1083 ms 102252 KB Output is correct
70 Correct 1092 ms 105000 KB Output is correct
71 Correct 1085 ms 16312 KB Output is correct
72 Correct 1127 ms 16484 KB Output is correct
73 Correct 187 ms 11936 KB Output is correct
74 Correct 200 ms 11868 KB Output is correct
75 Correct 127 ms 7560 KB Output is correct
76 Correct 1285 ms 10992 KB Output is correct
77 Correct 2 ms 6748 KB Output is correct
78 Correct 2 ms 6744 KB Output is correct
79 Correct 1 ms 6748 KB Output is correct
80 Correct 1 ms 6748 KB Output is correct
81 Correct 5 ms 6748 KB Output is correct
82 Correct 2 ms 6748 KB Output is correct
83 Correct 2 ms 6784 KB Output is correct
84 Correct 2 ms 6748 KB Output is correct
85 Correct 2 ms 6748 KB Output is correct
86 Correct 1 ms 6836 KB Output is correct
87 Correct 1 ms 7000 KB Output is correct
88 Correct 6 ms 6744 KB Output is correct
89 Correct 39 ms 7000 KB Output is correct
90 Correct 58 ms 6908 KB Output is correct
91 Correct 53 ms 6748 KB Output is correct
92 Runtime error 1088 ms 1048576 KB Execution killed with signal 9
93 Halted 0 ms 0 KB -