oj.uz

Submission #630840

# Submission time Handle Problem Language Result Execution time Memory
630840 2022-08-17T07:56:42 Z codr0 Mergers (JOI19_mergers) C++14
100 / 100
 963 ms 132652 KB 
#include <bits/stdc++.h>
#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
 
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORR(i,a,b) for(int i=a;i>=b;i--)
#define F first
#define S second
#define err(x) cerr<<#x<<" : "<<x<<'\n';
#define dmid int mid=(r+l)/2
#define lc 2*id
#define rc 2*id+1
#define pb push_back
#define all(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)

using namespace std;
const int N=5e5+4;
const int lg=20;
vector<int> adj[N];
vector<int> vc[N];
int par[lg][N];
int h[N];
bool ok[N];
int dp[N],up[N];
int n,k;

	void dfs(int v,int p){
		for(int u:adj[v]) if(u!=p){
			dfs(u,v);
			dp[v]+=dp[u];
			maxm(up[v],up[u]-1);
		}
		ok[v]=(up[v]>0);
		if(dp[v]==0&&v!=p&&!ok[v]){
			dp[v]=1;
		}
	}

	void DFS(int v,int p){
		h[v]=h[p]+1;
		par[0][v]=p;
		for(int u:adj[v]) if(u!=p) DFS(u,v);
	}

	int PAR(int v,int kk){
		while(kk>0){
			v=par[__builtin_ctz(kk)][v];
			kk-=(kk&(-kk));
		}
		return v;
	}

	int LCA(int u,int v){
		if(h[u]>h[v]) swap(u,v);
		v=PAR(v,h[v]-h[u]);
		if(v==u) return v;
		FORR(j,lg-1,0) if(par[j][u]!=par[j][v]){
			u=par[j][u];
			v=par[j][v];
		}
		return (par[0][v]);
	}

	int main(){
	iostream::sync_with_stdio(0); cin.tie(0);

	cin>>n>>k;
	FOR(_,1,n-1){
		int u,v; cin>>u>>v;
		adj[u].pb(v);
		adj[v].pb(u);
	}
	if(n<=2){
		int w0,w1; cin>>w0;
		if(n==1){
			cout<<"0\n";
			return 0;
		}
		if(n==2){
			cin>>w1;
			cout<<(w0!=w1)<<'\n';
			return 0;
		}
	}
	FOR(i,1,n){
		int w; cin>>w;
		vc[w].pb(i);
	}
	int root=1;
	FOR(i,1,n) if(SZ(adj[i])>1) root=i;
	DFS(root,root);	
	FOR(j,1,lg-1) FOR(i,1,n) par[j][i]=par[j-1][par[j-1][i]];
	FOR(i,1,k) if(!vc[i].empty()){
		int H=h[vc[i][0]];
		FOR(j,1,SZ(vc[i])-1) minm(H,h[LCA(vc[i][j],vc[i][j-1])]);
		for(int v:vc[i]) up[v]=h[v]-H;
	}

	dfs(root,root);
	FOR(i,1,n) if(i!=root&&!ok[i]&&dp[i]==dp[root]){
		dp[root]++;
		break;
	}
	cout<<(dp[root]/2+(dp[root]&1))<<'\n';

	return 0;
	}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23892 KB Output is correct
2 Correct 12 ms 23892 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 12 ms 23892 KB Output is correct
6 Correct 12 ms 23892 KB Output is correct
7 Correct 12 ms 23712 KB Output is correct
8 Correct 13 ms 23936 KB Output is correct
9 Correct 13 ms 23892 KB Output is correct
10 Correct 12 ms 23988 KB Output is correct
11 Correct 14 ms 23892 KB Output is correct
12 Correct 12 ms 23920 KB Output is correct
13 Correct 11 ms 23864 KB Output is correct
14 Correct 11 ms 23884 KB Output is correct
15 Correct 12 ms 23988 KB Output is correct
16 Correct 11 ms 23892 KB Output is correct
17 Correct 14 ms 23856 KB Output is correct
18 Correct 11 ms 23892 KB Output is correct
19 Correct 15 ms 23924 KB Output is correct
20 Correct 13 ms 23928 KB Output is correct
21 Correct 12 ms 23892 KB Output is correct
22 Correct 11 ms 23900 KB Output is correct
23 Correct 11 ms 23876 KB Output is correct
24 Correct 12 ms 23892 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23892 KB Output is correct
2 Correct 12 ms 23892 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 12 ms 23892 KB Output is correct
6 Correct 12 ms 23892 KB Output is correct
7 Correct 12 ms 23712 KB Output is correct
8 Correct 13 ms 23936 KB Output is correct
9 Correct 13 ms 23892 KB Output is correct
10 Correct 12 ms 23988 KB Output is correct
11 Correct 14 ms 23892 KB Output is correct
12 Correct 12 ms 23920 KB Output is correct
13 Correct 11 ms 23864 KB Output is correct
14 Correct 11 ms 23884 KB Output is correct
15 Correct 12 ms 23988 KB Output is correct
16 Correct 11 ms 23892 KB Output is correct
17 Correct 14 ms 23856 KB Output is correct
18 Correct 11 ms 23892 KB Output is correct
19 Correct 15 ms 23924 KB Output is correct
20 Correct 13 ms 23928 KB Output is correct
21 Correct 12 ms 23892 KB Output is correct
22 Correct 11 ms 23900 KB Output is correct
23 Correct 11 ms 23876 KB Output is correct
24 Correct 12 ms 23892 KB Output is correct
25 Correct 11 ms 23892 KB Output is correct
26 Correct 13 ms 24296 KB Output is correct
27 Correct 13 ms 24276 KB Output is correct
28 Correct 13 ms 24532 KB Output is correct
29 Correct 14 ms 24328 KB Output is correct
30 Correct 13 ms 24276 KB Output is correct
31 Correct 12 ms 23892 KB Output is correct
32 Correct 15 ms 24580 KB Output is correct
33 Correct 13 ms 23888 KB Output is correct
34 Correct 13 ms 24268 KB Output is correct
35 Correct 13 ms 24336 KB Output is correct
36 Correct 13 ms 24248 KB Output is correct
37 Correct 14 ms 24400 KB Output is correct
38 Correct 12 ms 24020 KB Output is correct
39 Correct 14 ms 24400 KB Output is correct
40 Correct 14 ms 24380 KB Output is correct
41 Correct 13 ms 24416 KB Output is correct
42 Correct 14 ms 24404 KB Output is correct
43 Correct 14 ms 24532 KB Output is correct
44 Correct 11 ms 23992 KB Output is correct
45 Correct 13 ms 24364 KB Output is correct
46 Correct 13 ms 24368 KB Output is correct
47 Correct 12 ms 23916 KB Output is correct
48 Correct 13 ms 24388 KB Output is correct
49 Correct 14 ms 24344 KB Output is correct
50 Correct 13 ms 24528 KB Output is correct
51 Correct 16 ms 24348 KB Output is correct
52 Correct 15 ms 24276 KB Output is correct
53 Correct 14 ms 24360 KB Output is correct
54 Correct 15 ms 24296 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23892 KB Output is correct
2 Correct 12 ms 23892 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 12 ms 23892 KB Output is correct
6 Correct 12 ms 23892 KB Output is correct
7 Correct 12 ms 23712 KB Output is correct
8 Correct 13 ms 23936 KB Output is correct
9 Correct 13 ms 23892 KB Output is correct
10 Correct 12 ms 23988 KB Output is correct
11 Correct 14 ms 23892 KB Output is correct
12 Correct 12 ms 23920 KB Output is correct
13 Correct 11 ms 23864 KB Output is correct
14 Correct 11 ms 23884 KB Output is correct
15 Correct 12 ms 23988 KB Output is correct
16 Correct 11 ms 23892 KB Output is correct
17 Correct 14 ms 23856 KB Output is correct
18 Correct 11 ms 23892 KB Output is correct
19 Correct 15 ms 23924 KB Output is correct
20 Correct 13 ms 23928 KB Output is correct
21 Correct 12 ms 23892 KB Output is correct
22 Correct 11 ms 23900 KB Output is correct
23 Correct 11 ms 23876 KB Output is correct
24 Correct 12 ms 23892 KB Output is correct
25 Correct 12 ms 23896 KB Output is correct
26 Correct 61 ms 36712 KB Output is correct
27 Correct 88 ms 36700 KB Output is correct
28 Correct 13 ms 24276 KB Output is correct
29 Correct 12 ms 23904 KB Output is correct
30 Correct 12 ms 23892 KB Output is correct
31 Correct 85 ms 36760 KB Output is correct
32 Correct 13 ms 24276 KB Output is correct
33 Correct 124 ms 41360 KB Output is correct
34 Correct 82 ms 36856 KB Output is correct
35 Correct 14 ms 24276 KB Output is correct
36 Correct 92 ms 37432 KB Output is correct
37 Correct 16 ms 24384 KB Output is correct
38 Correct 13 ms 24320 KB Output is correct
39 Correct 59 ms 36628 KB Output is correct
40 Correct 13 ms 24532 KB Output is correct
41 Correct 75 ms 36812 KB Output is correct
42 Correct 110 ms 39676 KB Output is correct
43 Correct 12 ms 23892 KB Output is correct
44 Correct 125 ms 40784 KB Output is correct
45 Correct 105 ms 40620 KB Output is correct
46 Correct 13 ms 24388 KB Output is correct
47 Correct 14 ms 24348 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 36700 KB Output is correct
2 Correct 65 ms 39604 KB Output is correct
3 Correct 14 ms 24308 KB Output is correct
4 Correct 14 ms 24276 KB Output is correct
5 Correct 13 ms 23916 KB Output is correct
6 Correct 12 ms 23944 KB Output is correct
7 Correct 16 ms 24276 KB Output is correct
8 Correct 104 ms 37876 KB Output is correct
9 Correct 14 ms 24288 KB Output is correct
10 Correct 86 ms 36904 KB Output is correct
11 Correct 12 ms 23904 KB Output is correct
12 Correct 85 ms 36828 KB Output is correct
13 Correct 97 ms 37780 KB Output is correct
14 Correct 86 ms 39416 KB Output is correct
15 Correct 57 ms 36608 KB Output is correct
16 Correct 13 ms 24328 KB Output is correct
17 Correct 11 ms 23892 KB Output is correct
18 Correct 68 ms 39360 KB Output is correct
19 Correct 98 ms 43424 KB Output is correct
20 Correct 15 ms 24440 KB Output is correct
21 Correct 12 ms 23892 KB Output is correct
22 Correct 83 ms 38076 KB Output is correct
23 Correct 13 ms 24380 KB Output is correct
24 Correct 80 ms 37056 KB Output is correct
25 Correct 84 ms 42448 KB Output is correct
26 Correct 14 ms 24420 KB Output is correct
27 Correct 14 ms 24540 KB Output is correct
28 Correct 13 ms 24384 KB Output is correct
29 Correct 13 ms 24276 KB Output is correct
30 Correct 13 ms 24404 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23892 KB Output is correct
2 Correct 12 ms 23892 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 12 ms 23892 KB Output is correct
5 Correct 12 ms 23892 KB Output is correct
6 Correct 12 ms 23892 KB Output is correct
7 Correct 12 ms 23712 KB Output is correct
8 Correct 13 ms 23936 KB Output is correct
9 Correct 13 ms 23892 KB Output is correct
10 Correct 12 ms 23988 KB Output is correct
11 Correct 14 ms 23892 KB Output is correct
12 Correct 12 ms 23920 KB Output is correct
13 Correct 11 ms 23864 KB Output is correct
14 Correct 11 ms 23884 KB Output is correct
15 Correct 12 ms 23988 KB Output is correct
16 Correct 11 ms 23892 KB Output is correct
17 Correct 14 ms 23856 KB Output is correct
18 Correct 11 ms 23892 KB Output is correct
19 Correct 15 ms 23924 KB Output is correct
20 Correct 13 ms 23928 KB Output is correct
21 Correct 12 ms 23892 KB Output is correct
22 Correct 11 ms 23900 KB Output is correct
23 Correct 11 ms 23876 KB Output is correct
24 Correct 12 ms 23892 KB Output is correct
25 Correct 11 ms 23892 KB Output is correct
26 Correct 13 ms 24296 KB Output is correct
27 Correct 13 ms 24276 KB Output is correct
28 Correct 13 ms 24532 KB Output is correct
29 Correct 14 ms 24328 KB Output is correct
30 Correct 13 ms 24276 KB Output is correct
31 Correct 12 ms 23892 KB Output is correct
32 Correct 15 ms 24580 KB Output is correct
33 Correct 13 ms 23888 KB Output is correct
34 Correct 13 ms 24268 KB Output is correct
35 Correct 13 ms 24336 KB Output is correct
36 Correct 13 ms 24248 KB Output is correct
37 Correct 14 ms 24400 KB Output is correct
38 Correct 12 ms 24020 KB Output is correct
39 Correct 14 ms 24400 KB Output is correct
40 Correct 14 ms 24380 KB Output is correct
41 Correct 13 ms 24416 KB Output is correct
42 Correct 14 ms 24404 KB Output is correct
43 Correct 14 ms 24532 KB Output is correct
44 Correct 11 ms 23992 KB Output is correct
45 Correct 13 ms 24364 KB Output is correct
46 Correct 13 ms 24368 KB Output is correct
47 Correct 12 ms 23916 KB Output is correct
48 Correct 13 ms 24388 KB Output is correct
49 Correct 14 ms 24344 KB Output is correct
50 Correct 13 ms 24528 KB Output is correct
51 Correct 16 ms 24348 KB Output is correct
52 Correct 15 ms 24276 KB Output is correct
53 Correct 14 ms 24360 KB Output is correct
54 Correct 15 ms 24296 KB Output is correct
55 Correct 12 ms 23896 KB Output is correct
56 Correct 61 ms 36712 KB Output is correct
57 Correct 88 ms 36700 KB Output is correct
58 Correct 13 ms 24276 KB Output is correct
59 Correct 12 ms 23904 KB Output is correct
60 Correct 12 ms 23892 KB Output is correct
61 Correct 85 ms 36760 KB Output is correct
62 Correct 13 ms 24276 KB Output is correct
63 Correct 124 ms 41360 KB Output is correct
64 Correct 82 ms 36856 KB Output is correct
65 Correct 14 ms 24276 KB Output is correct
66 Correct 92 ms 37432 KB Output is correct
67 Correct 16 ms 24384 KB Output is correct
68 Correct 13 ms 24320 KB Output is correct
69 Correct 59 ms 36628 KB Output is correct
70 Correct 13 ms 24532 KB Output is correct
71 Correct 75 ms 36812 KB Output is correct
72 Correct 110 ms 39676 KB Output is correct
73 Correct 12 ms 23892 KB Output is correct
74 Correct 125 ms 40784 KB Output is correct
75 Correct 105 ms 40620 KB Output is correct
76 Correct 13 ms 24388 KB Output is correct
77 Correct 14 ms 24348 KB Output is correct
78 Correct 61 ms 36700 KB Output is correct
79 Correct 65 ms 39604 KB Output is correct
80 Correct 14 ms 24308 KB Output is correct
81 Correct 14 ms 24276 KB Output is correct
82 Correct 13 ms 23916 KB Output is correct
83 Correct 12 ms 23944 KB Output is correct
84 Correct 16 ms 24276 KB Output is correct
85 Correct 104 ms 37876 KB Output is correct
86 Correct 14 ms 24288 KB Output is correct
87 Correct 86 ms 36904 KB Output is correct
88 Correct 12 ms 23904 KB Output is correct
89 Correct 85 ms 36828 KB Output is correct
90 Correct 97 ms 37780 KB Output is correct
91 Correct 86 ms 39416 KB Output is correct
92 Correct 57 ms 36608 KB Output is correct
93 Correct 13 ms 24328 KB Output is correct
94 Correct 11 ms 23892 KB Output is correct
95 Correct 68 ms 39360 KB Output is correct
96 Correct 98 ms 43424 KB Output is correct
97 Correct 15 ms 24440 KB Output is correct
98 Correct 12 ms 23892 KB Output is correct
99 Correct 83 ms 38076 KB Output is correct
100 Correct 13 ms 24380 KB Output is correct
101 Correct 80 ms 37056 KB Output is correct
102 Correct 84 ms 42448 KB Output is correct
103 Correct 14 ms 24420 KB Output is correct
104 Correct 14 ms 24540 KB Output is correct
105 Correct 13 ms 24384 KB Output is correct
106 Correct 13 ms 24276 KB Output is correct
107 Correct 13 ms 24404 KB Output is correct
108 Correct 455 ms 94864 KB Output is correct
109 Correct 909 ms 103244 KB Output is correct
110 Correct 963 ms 117572 KB Output is correct
111 Correct 801 ms 132652 KB Output is correct
112 Correct 695 ms 120320 KB Output is correct
113 Correct 444 ms 102552 KB Output is correct
114 Correct 598 ms 95152 KB Output is correct
115 Correct 629 ms 95168 KB Output is correct
116 Correct 739 ms 97168 KB Output is correct
117 Correct 625 ms 107700 KB Output is correct
118 Correct 653 ms 95352 KB Output is correct
119 Correct 658 ms 107652 KB Output is correct
120 Correct 675 ms 125260 KB Output is correct
121 Correct 658 ms 107704 KB Output is correct
122 Correct 706 ms 101808 KB Output is correct
123 Correct 449 ms 109160 KB Output is correct
124 Correct 726 ms 106248 KB Output is correct