oj.uz

Submission #523310

# Submission time Handle Problem Language Result Execution time Memory
523310 2022-02-07T11:58:34 Z amunduzbaev Meetings 2 (JOI21_meetings2) C++17
20 / 100
 4000 ms 92476 KB 
#include "bits/stdc++.h"
using namespace std;
 
#define ar array
 
const int N = 2e5 + 5;
vector<int> edges[N], S[N];
int used[N], ss[N], rr[N];
int sub[N], n, d[N];
 
void dff(int u, int p = -1){
	ss[u] = 1;
	for(auto x : edges[u]){
		if(x == p) continue;
		dff(x, u);
		ss[u] += ss[x];
	}
}
 
void dfs(int u, int& C, int n, int p = -1){
	sub[u] = 1;
	if(p == -1) d[u] = 0;
	for(auto x : edges[u]){
		if(x == p) continue;
		if(!used[x]){
			d[x] = d[u] + 1;
			dfs(x, C, n, u);
			sub[u] += sub[x];
		} else {
			if(ss[u] > ss[x]) sub[u] += ss[x];
			else sub[u] += (::n - ss[u]);
		}
	}
	if(sub[u] > n / 2 && C == -1) C = u;
}
 
void get(int u, vector<int>& tt, int p = -1){
	tt.push_back(u);
	for(auto x : edges[u]){
		if(used[x] || x == p) continue;
		get(x, tt, u);
	}
}

struct ST{
	int tree[N << 2];
	void sett(int i, int v, int lx = 0, int rx = N, int x = 1){
		if(lx == rx) { tree[x] = v; return; }
		int m = (lx + rx) >> 1;
		if(i <= m) sett(i, v, lx, m, x<<1);
		else sett(i, v, m+1, rx, x<<1|1);
		tree[x] = max(tree[x<<1], tree[x<<1|1]);
	}
	
	void umax(int i, int v, int lx = 0, int rx = N, int x = 1){
		if(lx == rx) { tree[x] = max(tree[x], v); return; }
		int m = (lx + rx) >> 1;
		if(i <= m) umax(i, v, lx, m, x<<1);
		else umax(i, v, m+1, rx, x<<1|1);
		tree[x] = max(tree[x<<1], tree[x<<1|1]);
	}
	
	int get(int l, int r, int lx = 0, int rx = N, int x = 1){
		if(lx > r || rx < l) return -1e9;
		if(lx >= l && rx <= r) return tree[x];
		int m = (lx + rx) >> 1;
		return max(get(l, r, lx, m, x<<1), get(l, r, m+1, rx, x<<1|1));
	}
}tree;

void dec(int u, int n){
	int C = -1;
	dfs(u, C, n), dfs(C, C, n);
	
	vector<int> tot;
	for(auto v : edges[C]){
		if(used[v]) continue;
		S[v].clear(); get(v, S[v], C);
		for(auto x : S[v]){
			//~ cout<<sub[x]<<" "<<sub[C] - sub[v]<<endl;
			rr[sub[x]] = max(rr[sub[x]], tree.get(sub[x], N) + d[x] + 1);
			rr[min(sub[x], sub[C] - sub[v])] = 
			max(rr[min(sub[x], sub[C] - sub[v])], d[x] + 1);
		} for(auto x : S[v]) tree.umax(sub[x], d[x]), tot.push_back(x);
	} for(auto x : tot) tree.sett(sub[x], -2e9);
	
	reverse(edges[C].begin(), edges[C].end());
	
	for(auto v : edges[C]){
		if(used[v]) continue;
		for(auto x : S[v]){
			//~ cout<<sub[x]<<" "<<x<<" "<<d[x]<<" "<<tree.get(sub[x], N)<<endl;
			rr[sub[x]] = max(rr[sub[x]], tree.get(sub[x], N) + d[x] + 1);
		} for(auto x : S[v]) tree.umax(sub[x], d[x]);
	} for(auto x : tot) tree.sett(sub[x], -2e9);
	
	used[C] = 1;
	for(auto x : edges[C]){
		if(used[x]) continue;
		dec(x, (int)S[x].size());
	}
}
 
signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	memset(tree.tree, 128, sizeof tree.tree);
	cin>>n;
	for(int i=1;i<n;i++){
		int a, b; cin>>a>>b;
		edges[a].push_back(b);
		edges[b].push_back(a);
	}
	
	dff(1);
	dec(1, n);
	rr[n] = 1;
	//~ for(int i=1;i<=n;i++) cout<<rr[i]<<" ";
	//~ cout<<endl;
	for(int i=n;i>0;i--) rr[i] = max(rr[i], rr[i+1]);
	for(int i=1;i<=n;i++){
		if(i&1) cout<<1<<"\n";
		else cout<<rr[i/2]<<"\n";
	}
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12748 KB Output is correct
2 Correct 7 ms 12748 KB Output is correct
3 Correct 6 ms 12788 KB Output is correct
4 Correct 7 ms 12828 KB Output is correct
5 Correct 13 ms 12840 KB Output is correct
6 Correct 8 ms 12748 KB Output is correct
7 Correct 7 ms 12748 KB Output is correct
8 Correct 7 ms 12748 KB Output is correct
9 Correct 7 ms 12816 KB Output is correct
10 Correct 7 ms 12748 KB Output is correct
11 Correct 7 ms 12748 KB Output is correct
12 Correct 7 ms 12748 KB Output is correct
13 Correct 6 ms 12752 KB Output is correct
14 Correct 7 ms 12748 KB Output is correct
15 Correct 6 ms 12860 KB Output is correct
16 Correct 7 ms 12748 KB Output is correct
17 Correct 7 ms 12748 KB Output is correct
18 Correct 6 ms 12748 KB Output is correct
19 Correct 7 ms 12748 KB Output is correct
20 Correct 6 ms 12748 KB Output is correct
21 Correct 7 ms 12748 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12748 KB Output is correct
2 Correct 7 ms 12748 KB Output is correct
3 Correct 6 ms 12788 KB Output is correct
4 Correct 7 ms 12828 KB Output is correct
5 Correct 13 ms 12840 KB Output is correct
6 Correct 8 ms 12748 KB Output is correct
7 Correct 7 ms 12748 KB Output is correct
8 Correct 7 ms 12748 KB Output is correct
9 Correct 7 ms 12816 KB Output is correct
10 Correct 7 ms 12748 KB Output is correct
11 Correct 7 ms 12748 KB Output is correct
12 Correct 7 ms 12748 KB Output is correct
13 Correct 6 ms 12752 KB Output is correct
14 Correct 7 ms 12748 KB Output is correct
15 Correct 6 ms 12860 KB Output is correct
16 Correct 7 ms 12748 KB Output is correct
17 Correct 7 ms 12748 KB Output is correct
18 Correct 6 ms 12748 KB Output is correct
19 Correct 7 ms 12748 KB Output is correct
20 Correct 6 ms 12748 KB Output is correct
21 Correct 7 ms 12748 KB Output is correct
22 Correct 19 ms 13204 KB Output is correct
23 Correct 22 ms 13188 KB Output is correct
24 Correct 20 ms 13312 KB Output is correct
25 Correct 18 ms 13260 KB Output is correct
26 Correct 18 ms 13280 KB Output is correct
27 Correct 18 ms 13260 KB Output is correct
28 Correct 20 ms 13260 KB Output is correct
29 Correct 20 ms 13180 KB Output is correct
30 Correct 20 ms 13260 KB Output is correct
31 Correct 23 ms 13216 KB Output is correct
32 Correct 348 ms 18280 KB Output is correct
33 Correct 612 ms 22168 KB Output is correct
34 Correct 12 ms 13132 KB Output is correct
35 Correct 11 ms 13132 KB Output is correct
36 Correct 32 ms 13568 KB Output is correct
37 Correct 12 ms 13260 KB Output is correct
38 Correct 153 ms 15488 KB Output is correct

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 12748 KB Output is correct
2 Correct 7 ms 12748 KB Output is correct
3 Correct 6 ms 12788 KB Output is correct
4 Correct 7 ms 12828 KB Output is correct
5 Correct 13 ms 12840 KB Output is correct
6 Correct 8 ms 12748 KB Output is correct
7 Correct 7 ms 12748 KB Output is correct
8 Correct 7 ms 12748 KB Output is correct
9 Correct 7 ms 12816 KB Output is correct
10 Correct 7 ms 12748 KB Output is correct
11 Correct 7 ms 12748 KB Output is correct
12 Correct 7 ms 12748 KB Output is correct
13 Correct 6 ms 12752 KB Output is correct
14 Correct 7 ms 12748 KB Output is correct
15 Correct 6 ms 12860 KB Output is correct
16 Correct 7 ms 12748 KB Output is correct
17 Correct 7 ms 12748 KB Output is correct
18 Correct 6 ms 12748 KB Output is correct
19 Correct 7 ms 12748 KB Output is correct
20 Correct 6 ms 12748 KB Output is correct
21 Correct 7 ms 12748 KB Output is correct
22 Correct 19 ms 13204 KB Output is correct
23 Correct 22 ms 13188 KB Output is correct
24 Correct 20 ms 13312 KB Output is correct
25 Correct 18 ms 13260 KB Output is correct
26 Correct 18 ms 13280 KB Output is correct
27 Correct 18 ms 13260 KB Output is correct
28 Correct 20 ms 13260 KB Output is correct
29 Correct 20 ms 13180 KB Output is correct
30 Correct 20 ms 13260 KB Output is correct
31 Correct 23 ms 13216 KB Output is correct
32 Correct 348 ms 18280 KB Output is correct
33 Correct 612 ms 22168 KB Output is correct
34 Correct 12 ms 13132 KB Output is correct
35 Correct 11 ms 13132 KB Output is correct
36 Correct 32 ms 13568 KB Output is correct
37 Correct 12 ms 13260 KB Output is correct
38 Correct 153 ms 15488 KB Output is correct
39 Correct 1176 ms 35528 KB Output is correct
40 Correct 1148 ms 34708 KB Output is correct
41 Correct 1271 ms 35112 KB Output is correct
42 Correct 1156 ms 35364 KB Output is correct
43 Correct 1181 ms 35376 KB Output is correct
44 Correct 1147 ms 35680 KB Output is correct
45 Execution timed out 4077 ms 92476 KB Time limit exceeded
46 Halted 0 ms 0 KB -