oj.uz

답안 #157396

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
157396 2019-10-11T07:49:04 Z nvmdava Election Campaign (JOI15_election_campaign) C++17
100 / 100
 263 ms 34488 KB 
#include <bits/stdc++.h>
#define N 131072
using namespace std;
#define ll long long
#define ff first
#define ss second

struct Seg{
	ll val[N << 1];
	
	void update(int L, int R, ll v, int id = 1, int l = 1, int r = N){
		if(L <= l && r <= R){
			val[id] += v;
			return;
		}
		if(r < L || l > R){
			return;
		}
		
		int m = (l + r) >> 1;
		update(L, R, v, id << 1, l, m);
		update(L, R, v, id << 1 | 1, m + 1, r);
	}
	
	inline ll get(int v){
		v += N - 1;
		ll s = 0;
		while(v){
			s += val[v];
			v >>= 1;
		}
		return s;
	}
} child;

vector<int> adj[N];

int in[N], out[N], p[N][20];
int d[N];

int n;
int cnt;

void dfs2(int v, int par){
	in[v] = ++cnt;
	
	d[v] = d[par] + 1;
	p[v][0] = par;
	
	for(int i = 0; p[v][i] != 0; i++){
		p[v][i + 1] = p[p[v][i]][i];	
	}
	
	for(int& x : adj[v]){
		if(x == par) continue;
		dfs2(x, v);
	}
	
	out[v] = cnt;
}

int find(int v, int u){
	if(d[v] < d[u]) swap(v, u);
	
	for(int i = 0; d[v] - d[u]; i++)
		if((d[v] - d[u]) & (1 << i))
			v = p[v][i];	
	
	if(v == u) return v;
	for(int i = 18; i >= 0; i--){
		if(p[v][i] != p[u][i]){
			v = p[v][i];
			u = p[u][i];
		}
	}
	return p[v][0];
}

vector<pair<pair<int, int>, int> > obj[N];

ll is1[N], is0[N];

void dfs(int v, int p){
	ll res = 0, tmp;
	
	for(int& x : adj[v]){
		if(x == p) continue;
		dfs(x, v);
		res += is1[x];
	}
	
	is1[v] = is0[v] = res;
	
	
	for(auto& x : obj[v]){
		tmp = x.ss + res;
		tmp += child.get(in[x.ff.ff]);
		tmp += child.get(in[x.ff.ss]);
		is1[v] = max(is1[v], tmp);
	}
	child.update(in[v], out[v], res - is1[v]);
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin>>n;
	
	for(int v, u, i = 1; i < n; i++){
		cin>>v>>u;
		adj[v].push_back(u);
		adj[u].push_back(v);
	}
	
	dfs2(1, 0);
	
	cin>>n;
	while(n--){
		int a, b, c;
		cin>>a>>b>>c;
		obj[find(a, b)].push_back({{a, b}, c});
	}
	
	dfs(1, 0);
	
	cout<<is1[1];
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 6648 KB Output is correct
2 Correct 8 ms 6520 KB Output is correct
3 Correct 8 ms 6520 KB Output is correct
4 Correct 8 ms 6776 KB Output is correct
5 Correct 131 ms 23160 KB Output is correct
6 Correct 87 ms 30840 KB Output is correct
7 Correct 128 ms 28088 KB Output is correct
8 Correct 106 ms 22776 KB Output is correct
9 Correct 125 ms 26592 KB Output is correct
10 Correct 87 ms 22832 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 6520 KB Output is correct
2 Correct 8 ms 6648 KB Output is correct
3 Correct 8 ms 6776 KB Output is correct
4 Correct 163 ms 34292 KB Output is correct
5 Correct 167 ms 34168 KB Output is correct
6 Correct 150 ms 34168 KB Output is correct
7 Correct 170 ms 34116 KB Output is correct
8 Correct 164 ms 34172 KB Output is correct
9 Correct 146 ms 34168 KB Output is correct
10 Correct 160 ms 34196 KB Output is correct

Subtask #3
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 6520 KB Output is correct
2 Correct 8 ms 6648 KB Output is correct
3 Correct 8 ms 6776 KB Output is correct
4 Correct 163 ms 34292 KB Output is correct
5 Correct 167 ms 34168 KB Output is correct
6 Correct 150 ms 34168 KB Output is correct
7 Correct 170 ms 34116 KB Output is correct
8 Correct 164 ms 34172 KB Output is correct
9 Correct 146 ms 34168 KB Output is correct
10 Correct 160 ms 34196 KB Output is correct
11 Correct 19 ms 7672 KB Output is correct
12 Correct 173 ms 34460 KB Output is correct
13 Correct 172 ms 34424 KB Output is correct
14 Correct 157 ms 34424 KB Output is correct
15 Correct 168 ms 34396 KB Output is correct
16 Correct 156 ms 34456 KB Output is correct
17 Correct 175 ms 34468 KB Output is correct
18 Correct 186 ms 34424 KB Output is correct
19 Correct 155 ms 34424 KB Output is correct
20 Correct 179 ms 34488 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 259 ms 26004 KB Output is correct
2 Correct 171 ms 34164 KB Output is correct
3 Correct 263 ms 31092 KB Output is correct
4 Correct 144 ms 25796 KB Output is correct
5 Correct 202 ms 30516 KB Output is correct
6 Correct 144 ms 25708 KB Output is correct
7 Correct 255 ms 30520 KB Output is correct
8 Correct 189 ms 26236 KB Output is correct
9 Correct 148 ms 34188 KB Output is correct
10 Correct 246 ms 29356 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 6648 KB Output is correct
2 Correct 8 ms 6520 KB Output is correct
3 Correct 8 ms 6520 KB Output is correct
4 Correct 8 ms 6776 KB Output is correct
5 Correct 131 ms 23160 KB Output is correct
6 Correct 87 ms 30840 KB Output is correct
7 Correct 128 ms 28088 KB Output is correct
8 Correct 106 ms 22776 KB Output is correct
9 Correct 125 ms 26592 KB Output is correct
10 Correct 87 ms 22832 KB Output is correct
11 Correct 8 ms 6776 KB Output is correct
12 Correct 9 ms 6908 KB Output is correct
13 Correct 9 ms 6776 KB Output is correct
14 Correct 8 ms 6776 KB Output is correct
15 Correct 9 ms 6776 KB Output is correct
16 Correct 9 ms 6776 KB Output is correct
17 Correct 8 ms 6776 KB Output is correct
18 Correct 9 ms 6776 KB Output is correct
19 Correct 8 ms 6780 KB Output is correct
20 Correct 8 ms 6776 KB Output is correct

Subtask #6
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 6648 KB Output is correct
2 Correct 8 ms 6520 KB Output is correct
3 Correct 8 ms 6520 KB Output is correct
4 Correct 8 ms 6776 KB Output is correct
5 Correct 131 ms 23160 KB Output is correct
6 Correct 87 ms 30840 KB Output is correct
7 Correct 128 ms 28088 KB Output is correct
8 Correct 106 ms 22776 KB Output is correct
9 Correct 125 ms 26592 KB Output is correct
10 Correct 87 ms 22832 KB Output is correct
11 Correct 7 ms 6520 KB Output is correct
12 Correct 8 ms 6648 KB Output is correct
13 Correct 8 ms 6776 KB Output is correct
14 Correct 163 ms 34292 KB Output is correct
15 Correct 167 ms 34168 KB Output is correct
16 Correct 150 ms 34168 KB Output is correct
17 Correct 170 ms 34116 KB Output is correct
18 Correct 164 ms 34172 KB Output is correct
19 Correct 146 ms 34168 KB Output is correct
20 Correct 160 ms 34196 KB Output is correct
21 Correct 19 ms 7672 KB Output is correct
22 Correct 173 ms 34460 KB Output is correct
23 Correct 172 ms 34424 KB Output is correct
24 Correct 157 ms 34424 KB Output is correct
25 Correct 168 ms 34396 KB Output is correct
26 Correct 156 ms 34456 KB Output is correct
27 Correct 175 ms 34468 KB Output is correct
28 Correct 186 ms 34424 KB Output is correct
29 Correct 155 ms 34424 KB Output is correct
30 Correct 179 ms 34488 KB Output is correct
31 Correct 259 ms 26004 KB Output is correct
32 Correct 171 ms 34164 KB Output is correct
33 Correct 263 ms 31092 KB Output is correct
34 Correct 144 ms 25796 KB Output is correct
35 Correct 202 ms 30516 KB Output is correct
36 Correct 144 ms 25708 KB Output is correct
37 Correct 255 ms 30520 KB Output is correct
38 Correct 189 ms 26236 KB Output is correct
39 Correct 148 ms 34188 KB Output is correct
40 Correct 246 ms 29356 KB Output is correct
41 Correct 8 ms 6776 KB Output is correct
42 Correct 9 ms 6908 KB Output is correct
43 Correct 9 ms 6776 KB Output is correct
44 Correct 8 ms 6776 KB Output is correct
45 Correct 9 ms 6776 KB Output is correct
46 Correct 9 ms 6776 KB Output is correct
47 Correct 8 ms 6776 KB Output is correct
48 Correct 9 ms 6776 KB Output is correct
49 Correct 8 ms 6780 KB Output is correct
50 Correct 8 ms 6776 KB Output is correct
51 Correct 190 ms 26604 KB Output is correct
52 Correct 166 ms 34444 KB Output is correct
53 Correct 255 ms 29716 KB Output is correct
54 Correct 149 ms 26036 KB Output is correct
55 Correct 190 ms 26332 KB Output is correct
56 Correct 166 ms 34424 KB Output is correct
57 Correct 237 ms 30328 KB Output is correct
58 Correct 148 ms 25904 KB Output is correct
59 Correct 184 ms 26468 KB Output is correct
60 Correct 171 ms 34424 KB Output is correct
61 Correct 206 ms 30428 KB Output is correct
62 Correct 144 ms 25780 KB Output is correct
63 Correct 187 ms 26080 KB Output is correct
64 Correct 167 ms 34424 KB Output is correct
65 Correct 244 ms 30256 KB Output is correct
66 Correct 138 ms 26124 KB Output is correct
67 Correct 176 ms 26096 KB Output is correct
68 Correct 163 ms 34428 KB Output is correct
69 Correct 212 ms 29304 KB Output is correct
70 Correct 152 ms 26080 KB Output is correct