oj.uz

Submission #635251

# Submission time Handle Problem Language Result Execution time Memory
635251 2022-08-25T18:02:40 Z LittleCube Jail (JOI22_jail) C++17
100 / 100
 3040 ms 347208 KB 
// #pragma GCC optimize("Ofast,unroll-loops")
// #pragma target("avx,avx2,sse,sse2,ssse3,sse4,fma,tune=native")
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

int T, N, M, s[1200005], e[1200005], deg[5400005], fr[1200005], to[1200005], pre[1200005][18], ts;
pii io[1200005];
vector<int> E[1200005], topo[5400006]; 

inline int idx(int u, int p = 0, int type = -1)
{
	return (2 * p + 1 + type) * N + u;
}

inline void dfs(int u)
{
	io[u].F = ++ts;
	for(int p = 1; p <= 17; p++)
	{
		pre[u][p] = pre[pre[u][p - 1]][p - 1];
		topo[idx(u, 		  p-1, 0)].emplace_back(idx(u, p, 0));
		topo[idx(pre[u][p-1], p-1, 0)].emplace_back(idx(u, p, 0));
		topo[idx(u, p, 1)].emplace_back(idx(u, 			 p-1, 1));
		topo[idx(u, p, 1)].emplace_back(idx(pre[u][p-1], p-1, 1));
	}
	if(s[pre[u][0]])
		topo[s[pre[u][0]]].emplace_back(idx(u, 0, 0));
	if(e[pre[u][0]])
		topo[idx(u, 0, 1)].emplace_back(e[pre[u][0]]);

	for(int v : E[u])
		if(pre[u][0] != v)
		{
			pre[v][0] = u;
			dfs(v);
		}
	io[u].S = ts;
}
inline void addedge(int pos, int i)
{
	// cout << pos << ' ' << i << '\n';
	if(s[pos] && s[pos] != i)
		topo[s[pos]].emplace_back(i);
	if(e[pos] && e[pos] != i)
		topo[i].emplace_back(e[pos]);
}

inline bool isSubtree(int r, int c)
{
	return io[r].F <= io[c].F && io[c].S <= io[r].S;
}

inline int jump(int u, int v, int i)
{
	for(int p = 17; p >= 0; p--)
		if(!isSubtree(pre[u][p], v))
		{
			topo[i].emplace_back(idx(u, p, 1));
			topo[idx(u, p, 0)].emplace_back(i);
			// cout << u << ' ' << p << ' ' << i << '\n';
			u = pre[u][p];
		}
	return u;
}


inline void solve()
{
	ts = 0;
	cin >> N;
	for(int i = 1; i <= N; i++)
	{
		pre[i][0] = s[i] = e[i] = 0;
		E[i].clear();
	}
	for(int i = 1; i < N; i++)
	{
		int u, v;
		cin >> u >> v;
		E[u].emplace_back(v);
		E[v].emplace_back(u);
	}
	
	for(int p = 0; p <= 17; p++)
		pre[1][p] = 1;
		
	cin >> M;
	
	for(int i = 1; i <= 36 * N; i++)
	{
		deg[i] = 0;
		topo[i].clear();
	}
	
	for(int i = 1; i <= M; i++)
	{
		cin >> fr[i] >> to[i];
		s[fr[i]] = i;
		e[to[i]] = i;
	}

	dfs(1);

	for(int i = 1; i <= M; i++)
	{
		int u = fr[i], v = to[i];
		addedge(u, i);
		addedge(v, i);

		if(pre[u][0] == v || pre[v][0] == u) continue;
		
		if(isSubtree(u, v))
			jump(v, u, i);
		else if(isSubtree(v, u))
			jump(u, v, i);
		else
		{	
			int lca = jump(u, v, i);
			jump(v, u, i);
			addedge(pre[lca][0], i);
		}
	}

	for(int i = 1; i <= 36 * N; i++)
		for(int j : topo[i])
		{	
			// cout << i << "->" << j << '\n';
			deg[j]++;
		}
	
	queue<int> q;
	for(int i = 1; i <= 36 * N; i++)
		if(deg[i] == 0)
			q.emplace(i);

	for(int t = 1; t <= 36 * N; t++)
	{
		if(q.empty())
		{
			cout << "No\n";
			return;
		}
		int u = q.front();
		q.pop();
		for(int v : topo[u])
		{
			deg[v]--;
			if(deg[v] == 0)
				q.emplace(v);
		}
	}
	cout << "Yes\n";
}



signed main()
{
	ios::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
	cin >> T;
	while(T--)
	{
		solve();
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 155340 KB Output is correct
2 Correct 71 ms 155244 KB Output is correct
3 Correct 72 ms 155332 KB Output is correct
4 Correct 153 ms 156008 KB Output is correct
5 Correct 241 ms 156552 KB Output is correct
6 Correct 90 ms 155688 KB Output is correct
7 Correct 84 ms 155756 KB Output is correct
8 Correct 86 ms 155740 KB Output is correct
9 Correct 530 ms 165948 KB Output is correct
10 Correct 1004 ms 329300 KB Output is correct
11 Correct 119 ms 155536 KB Output is correct
12 Correct 270 ms 156536 KB Output is correct
13 Correct 1411 ms 333496 KB Output is correct
14 Correct 1184 ms 333612 KB Output is correct
15 Correct 1532 ms 335944 KB Output is correct
16 Correct 1476 ms 347208 KB Output is correct
17 Correct 1143 ms 337812 KB Output is correct
18 Correct 1190 ms 336760 KB Output is correct
19 Correct 1212 ms 337848 KB Output is correct
20 Correct 1026 ms 337760 KB Output is correct
21 Correct 904 ms 336664 KB Output is correct
22 Correct 882 ms 333088 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 155360 KB Output is correct
2 Correct 76 ms 155248 KB Output is correct
3 Correct 81 ms 155788 KB Output is correct
4 Correct 82 ms 155768 KB Output is correct
5 Correct 85 ms 155740 KB Output is correct
6 Correct 86 ms 155688 KB Output is correct
7 Correct 84 ms 155700 KB Output is correct
8 Correct 84 ms 155776 KB Output is correct
9 Correct 85 ms 155796 KB Output is correct
10 Correct 85 ms 155724 KB Output is correct
11 Correct 84 ms 155720 KB Output is correct
12 Correct 78 ms 155648 KB Output is correct
13 Correct 79 ms 155644 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 155360 KB Output is correct
2 Correct 76 ms 155248 KB Output is correct
3 Correct 81 ms 155788 KB Output is correct
4 Correct 82 ms 155768 KB Output is correct
5 Correct 85 ms 155740 KB Output is correct
6 Correct 86 ms 155688 KB Output is correct
7 Correct 84 ms 155700 KB Output is correct
8 Correct 84 ms 155776 KB Output is correct
9 Correct 85 ms 155796 KB Output is correct
10 Correct 85 ms 155724 KB Output is correct
11 Correct 84 ms 155720 KB Output is correct
12 Correct 78 ms 155648 KB Output is correct
13 Correct 79 ms 155644 KB Output is correct
14 Correct 73 ms 155256 KB Output is correct
15 Correct 73 ms 155340 KB Output is correct
16 Correct 83 ms 155724 KB Output is correct
17 Correct 85 ms 155752 KB Output is correct
18 Correct 84 ms 155704 KB Output is correct
19 Correct 73 ms 155316 KB Output is correct
20 Correct 89 ms 155724 KB Output is correct
21 Correct 84 ms 155792 KB Output is correct
22 Correct 84 ms 155852 KB Output is correct
23 Correct 73 ms 155368 KB Output is correct
24 Correct 72 ms 155520 KB Output is correct
25 Correct 84 ms 155804 KB Output is correct
26 Correct 82 ms 155624 KB Output is correct
27 Correct 89 ms 155784 KB Output is correct
28 Correct 74 ms 155340 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 155360 KB Output is correct
2 Correct 76 ms 155248 KB Output is correct
3 Correct 81 ms 155788 KB Output is correct
4 Correct 82 ms 155768 KB Output is correct
5 Correct 85 ms 155740 KB Output is correct
6 Correct 86 ms 155688 KB Output is correct
7 Correct 84 ms 155700 KB Output is correct
8 Correct 84 ms 155776 KB Output is correct
9 Correct 85 ms 155796 KB Output is correct
10 Correct 85 ms 155724 KB Output is correct
11 Correct 84 ms 155720 KB Output is correct
12 Correct 78 ms 155648 KB Output is correct
13 Correct 79 ms 155644 KB Output is correct
14 Correct 73 ms 155256 KB Output is correct
15 Correct 73 ms 155340 KB Output is correct
16 Correct 83 ms 155724 KB Output is correct
17 Correct 85 ms 155752 KB Output is correct
18 Correct 84 ms 155704 KB Output is correct
19 Correct 73 ms 155316 KB Output is correct
20 Correct 89 ms 155724 KB Output is correct
21 Correct 84 ms 155792 KB Output is correct
22 Correct 84 ms 155852 KB Output is correct
23 Correct 73 ms 155368 KB Output is correct
24 Correct 72 ms 155520 KB Output is correct
25 Correct 84 ms 155804 KB Output is correct
26 Correct 82 ms 155624 KB Output is correct
27 Correct 89 ms 155784 KB Output is correct
28 Correct 74 ms 155340 KB Output is correct
29 Correct 84 ms 155800 KB Output is correct
30 Correct 94 ms 155780 KB Output is correct
31 Correct 87 ms 155828 KB Output is correct
32 Correct 84 ms 155756 KB Output is correct
33 Correct 85 ms 155724 KB Output is correct
34 Correct 80 ms 155732 KB Output is correct
35 Correct 80 ms 155708 KB Output is correct
36 Correct 85 ms 155664 KB Output is correct
37 Correct 78 ms 155724 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 155360 KB Output is correct
2 Correct 76 ms 155248 KB Output is correct
3 Correct 81 ms 155788 KB Output is correct
4 Correct 82 ms 155768 KB Output is correct
5 Correct 85 ms 155740 KB Output is correct
6 Correct 86 ms 155688 KB Output is correct
7 Correct 84 ms 155700 KB Output is correct
8 Correct 84 ms 155776 KB Output is correct
9 Correct 85 ms 155796 KB Output is correct
10 Correct 85 ms 155724 KB Output is correct
11 Correct 84 ms 155720 KB Output is correct
12 Correct 78 ms 155648 KB Output is correct
13 Correct 79 ms 155644 KB Output is correct
14 Correct 73 ms 155256 KB Output is correct
15 Correct 73 ms 155340 KB Output is correct
16 Correct 83 ms 155724 KB Output is correct
17 Correct 85 ms 155752 KB Output is correct
18 Correct 84 ms 155704 KB Output is correct
19 Correct 73 ms 155316 KB Output is correct
20 Correct 89 ms 155724 KB Output is correct
21 Correct 84 ms 155792 KB Output is correct
22 Correct 84 ms 155852 KB Output is correct
23 Correct 73 ms 155368 KB Output is correct
24 Correct 72 ms 155520 KB Output is correct
25 Correct 84 ms 155804 KB Output is correct
26 Correct 82 ms 155624 KB Output is correct
27 Correct 89 ms 155784 KB Output is correct
28 Correct 74 ms 155340 KB Output is correct
29 Correct 84 ms 155800 KB Output is correct
30 Correct 94 ms 155780 KB Output is correct
31 Correct 87 ms 155828 KB Output is correct
32 Correct 84 ms 155756 KB Output is correct
33 Correct 85 ms 155724 KB Output is correct
34 Correct 80 ms 155732 KB Output is correct
35 Correct 80 ms 155708 KB Output is correct
36 Correct 85 ms 155664 KB Output is correct
37 Correct 78 ms 155724 KB Output is correct
38 Correct 577 ms 165920 KB Output is correct
39 Correct 1012 ms 329412 KB Output is correct
40 Correct 712 ms 167028 KB Output is correct
41 Correct 765 ms 166208 KB Output is correct
42 Correct 441 ms 166752 KB Output is correct
43 Correct 709 ms 167024 KB Output is correct
44 Correct 129 ms 157280 KB Output is correct
45 Correct 2617 ms 323112 KB Output is correct
46 Correct 2399 ms 323076 KB Output is correct
47 Correct 1574 ms 323420 KB Output is correct
48 Correct 1697 ms 323540 KB Output is correct
49 Correct 1846 ms 324148 KB Output is correct
50 Correct 1928 ms 323992 KB Output is correct
51 Correct 1919 ms 324176 KB Output is correct
52 Correct 1835 ms 324252 KB Output is correct
53 Correct 227 ms 167988 KB Output is correct
54 Correct 2839 ms 323648 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 155340 KB Output is correct
2 Correct 75 ms 155320 KB Output is correct
3 Correct 79 ms 155284 KB Output is correct
4 Correct 75 ms 155272 KB Output is correct
5 Correct 111 ms 155716 KB Output is correct
6 Correct 75 ms 155752 KB Output is correct
7 Correct 77 ms 155652 KB Output is correct
8 Correct 72 ms 155256 KB Output is correct
9 Correct 78 ms 155256 KB Output is correct
10 Correct 73 ms 155524 KB Output is correct
11 Correct 79 ms 155380 KB Output is correct
12 Correct 82 ms 155688 KB Output is correct
13 Correct 181 ms 156124 KB Output is correct
14 Correct 292 ms 156608 KB Output is correct
15 Correct 229 ms 156740 KB Output is correct
16 Correct 2783 ms 324600 KB Output is correct
17 Correct 2569 ms 329556 KB Output is correct
18 Correct 2783 ms 337360 KB Output is correct
19 Correct 2689 ms 324808 KB Output is correct
20 Correct 2763 ms 324744 KB Output is correct
21 Correct 2689 ms 324828 KB Output is correct
22 Correct 2742 ms 328836 KB Output is correct
23 Correct 2531 ms 328852 KB Output is correct
24 Correct 3017 ms 328744 KB Output is correct
25 Correct 2994 ms 328864 KB Output is correct
26 Correct 3036 ms 328748 KB Output is correct
27 Correct 2558 ms 328500 KB Output is correct
28 Correct 2619 ms 328564 KB Output is correct
29 Correct 2508 ms 328564 KB Output is correct
30 Correct 2732 ms 327860 KB Output is correct
31 Correct 3016 ms 327668 KB Output is correct
32 Correct 2676 ms 325696 KB Output is correct
33 Correct 2629 ms 325508 KB Output is correct

Subtask #7
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 155340 KB Output is correct
2 Correct 71 ms 155244 KB Output is correct
3 Correct 72 ms 155332 KB Output is correct
4 Correct 153 ms 156008 KB Output is correct
5 Correct 241 ms 156552 KB Output is correct
6 Correct 90 ms 155688 KB Output is correct
7 Correct 84 ms 155756 KB Output is correct
8 Correct 86 ms 155740 KB Output is correct
9 Correct 530 ms 165948 KB Output is correct
10 Correct 1004 ms 329300 KB Output is correct
11 Correct 119 ms 155536 KB Output is correct
12 Correct 270 ms 156536 KB Output is correct
13 Correct 1411 ms 333496 KB Output is correct
14 Correct 1184 ms 333612 KB Output is correct
15 Correct 1532 ms 335944 KB Output is correct
16 Correct 1476 ms 347208 KB Output is correct
17 Correct 1143 ms 337812 KB Output is correct
18 Correct 1190 ms 336760 KB Output is correct
19 Correct 1212 ms 337848 KB Output is correct
20 Correct 1026 ms 337760 KB Output is correct
21 Correct 904 ms 336664 KB Output is correct
22 Correct 882 ms 333088 KB Output is correct
23 Correct 77 ms 155360 KB Output is correct
24 Correct 76 ms 155248 KB Output is correct
25 Correct 81 ms 155788 KB Output is correct
26 Correct 82 ms 155768 KB Output is correct
27 Correct 85 ms 155740 KB Output is correct
28 Correct 86 ms 155688 KB Output is correct
29 Correct 84 ms 155700 KB Output is correct
30 Correct 84 ms 155776 KB Output is correct
31 Correct 85 ms 155796 KB Output is correct
32 Correct 85 ms 155724 KB Output is correct
33 Correct 84 ms 155720 KB Output is correct
34 Correct 78 ms 155648 KB Output is correct
35 Correct 79 ms 155644 KB Output is correct
36 Correct 73 ms 155256 KB Output is correct
37 Correct 73 ms 155340 KB Output is correct
38 Correct 83 ms 155724 KB Output is correct
39 Correct 85 ms 155752 KB Output is correct
40 Correct 84 ms 155704 KB Output is correct
41 Correct 73 ms 155316 KB Output is correct
42 Correct 89 ms 155724 KB Output is correct
43 Correct 84 ms 155792 KB Output is correct
44 Correct 84 ms 155852 KB Output is correct
45 Correct 73 ms 155368 KB Output is correct
46 Correct 72 ms 155520 KB Output is correct
47 Correct 84 ms 155804 KB Output is correct
48 Correct 82 ms 155624 KB Output is correct
49 Correct 89 ms 155784 KB Output is correct
50 Correct 74 ms 155340 KB Output is correct
51 Correct 84 ms 155800 KB Output is correct
52 Correct 94 ms 155780 KB Output is correct
53 Correct 87 ms 155828 KB Output is correct
54 Correct 84 ms 155756 KB Output is correct
55 Correct 85 ms 155724 KB Output is correct
56 Correct 80 ms 155732 KB Output is correct
57 Correct 80 ms 155708 KB Output is correct
58 Correct 85 ms 155664 KB Output is correct
59 Correct 78 ms 155724 KB Output is correct
60 Correct 577 ms 165920 KB Output is correct
61 Correct 1012 ms 329412 KB Output is correct
62 Correct 712 ms 167028 KB Output is correct
63 Correct 765 ms 166208 KB Output is correct
64 Correct 441 ms 166752 KB Output is correct
65 Correct 709 ms 167024 KB Output is correct
66 Correct 129 ms 157280 KB Output is correct
67 Correct 2617 ms 323112 KB Output is correct
68 Correct 2399 ms 323076 KB Output is correct
69 Correct 1574 ms 323420 KB Output is correct
70 Correct 1697 ms 323540 KB Output is correct
71 Correct 1846 ms 324148 KB Output is correct
72 Correct 1928 ms 323992 KB Output is correct
73 Correct 1919 ms 324176 KB Output is correct
74 Correct 1835 ms 324252 KB Output is correct
75 Correct 227 ms 167988 KB Output is correct
76 Correct 2839 ms 323648 KB Output is correct
77 Correct 74 ms 155340 KB Output is correct
78 Correct 75 ms 155320 KB Output is correct
79 Correct 79 ms 155284 KB Output is correct
80 Correct 75 ms 155272 KB Output is correct
81 Correct 111 ms 155716 KB Output is correct
82 Correct 75 ms 155752 KB Output is correct
83 Correct 77 ms 155652 KB Output is correct
84 Correct 72 ms 155256 KB Output is correct
85 Correct 78 ms 155256 KB Output is correct
86 Correct 73 ms 155524 KB Output is correct
87 Correct 79 ms 155380 KB Output is correct
88 Correct 82 ms 155688 KB Output is correct
89 Correct 181 ms 156124 KB Output is correct
90 Correct 292 ms 156608 KB Output is correct
91 Correct 229 ms 156740 KB Output is correct
92 Correct 2783 ms 324600 KB Output is correct
93 Correct 2569 ms 329556 KB Output is correct
94 Correct 2783 ms 337360 KB Output is correct
95 Correct 2689 ms 324808 KB Output is correct
96 Correct 2763 ms 324744 KB Output is correct
97 Correct 2689 ms 324828 KB Output is correct
98 Correct 2742 ms 328836 KB Output is correct
99 Correct 2531 ms 328852 KB Output is correct
100 Correct 3017 ms 328744 KB Output is correct
101 Correct 2994 ms 328864 KB Output is correct
102 Correct 3036 ms 328748 KB Output is correct
103 Correct 2558 ms 328500 KB Output is correct
104 Correct 2619 ms 328564 KB Output is correct
105 Correct 2508 ms 328564 KB Output is correct
106 Correct 2732 ms 327860 KB Output is correct
107 Correct 3016 ms 327668 KB Output is correct
108 Correct 2676 ms 325696 KB Output is correct
109 Correct 2629 ms 325508 KB Output is correct
110 Correct 303 ms 156872 KB Output is correct
111 Correct 235 ms 156540 KB Output is correct
112 Correct 1559 ms 335792 KB Output is correct
113 Correct 1937 ms 326028 KB Output is correct
114 Correct 1325 ms 335360 KB Output is correct
115 Correct 804 ms 328260 KB Output is correct
116 Correct 2864 ms 330116 KB Output is correct
117 Correct 2818 ms 339652 KB Output is correct
118 Correct 2853 ms 323588 KB Output is correct
119 Correct 2758 ms 323752 KB Output is correct
120 Correct 208 ms 169972 KB Output is correct
121 Correct 2885 ms 329960 KB Output is correct
122 Correct 3040 ms 330004 KB Output is correct
123 Correct 1872 ms 327348 KB Output is correct
124 Correct 1373 ms 327372 KB Output is correct
125 Correct 1832 ms 327872 KB Output is correct
126 Correct 1805 ms 346988 KB Output is correct
127 Correct 1751 ms 335720 KB Output is correct
128 Correct 1612 ms 335796 KB Output is correct
129 Correct 1891 ms 335680 KB Output is correct
130 Correct 1648 ms 335656 KB Output is correct