oj.uz

답안 #140785

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
140785 2019-08-05T06:56:31 Z Kamisama Election Campaign (JOI15_election_campaign) C++14
100 / 100
 307 ms 28884 KB 
#include <iostream>
#include <cstdio>
#include <vector>
using namespace std;
const int maxn=1e5+3;
const int logn=19;

int n,m,lv[maxn],par[maxn],f[maxn][logn];
int timeIn[maxn],timeOut[maxn];
long long dp[maxn],bit[maxn];
vector<int> adj[maxn],road[maxn];
struct Query{int a,b,c;}q[maxn];

inline void Dfs(const int &u, const int &p){
	static int nVisits=0;
	f[u][0]=p; par[u]=p;
	timeIn[u]=++nVisits;
	for(int i=1;i<logn;i++){
		int v=f[u][i-1];
		if(v==-1) f[u][i]=-1;
		else f[u][i]=f[v][i-1];
	}
	for(int v: adj[u]) if(v!=p){
		lv[v]=lv[u]+1;
		Dfs(v,u);
	}
	timeOut[u]=nVisits;
}

inline int Jump(int u, int k){
	int cur=0;
	for(;k;k>>=1){
		if(k&1) u=f[u][cur];
		cur++;
	}
	return u;
}

inline int Lca(int u, int v){
	if(lv[v]<lv[u]) swap(u,v);
	v=Jump(v,lv[v]-lv[u]);
	if(u==v) return u;
	for(int i=logn-1;i>=0;i--) if(f[u][i]!=f[v][i]){
		u=f[u][i]; v=f[v][i];
	}
	return par[u];
}

inline void Update(int x, const int &val){
	for(;x<=n;x+=x&-x) bit[x]+=val;
}

inline int Get(int x){
	long long res=0;
	for(;x;x-=x&-x) res+=bit[x];
	return res;
}

inline void Solve(const int &u, const int &p){
	long long sumChild=0;
	for(int v: adj[u]) if(v!=p){
		Solve(v,u);
		sumChild+=dp[v];
	}
	dp[u]=sumChild;
	for(int i: road[u]){
		dp[u]=max(dp[u],sumChild-Get(timeIn[q[i].a])-Get(timeIn[q[i].b])+q[i].c);
	}
	Update(timeIn[u],dp[u]-sumChild);
	Update(timeOut[u]+1,sumChild-dp[u]);
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL); cout.tie(NULL);
	cin>>n;
	for(int i=1,u,v;i<n;i++){
		cin>>u>>v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	Dfs(1,-1);
	cin>>m;
	for(int i=1;i<=m;i++){
		cin>>q[i].a>>q[i].b>>q[i].c;
		road[Lca(q[i].a,q[i].b)].push_back(i);
	}
	Solve(1,-1);
	cout<<dp[1];
	return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5240 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5112 KB Output is correct
4 Correct 7 ms 5240 KB Output is correct
5 Correct 116 ms 20000 KB Output is correct
6 Correct 65 ms 24828 KB Output is correct
7 Correct 119 ms 23172 KB Output is correct
8 Correct 92 ms 20344 KB Output is correct
9 Correct 113 ms 22208 KB Output is correct
10 Correct 82 ms 20472 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5084 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5240 KB Output is correct
4 Correct 157 ms 28524 KB Output is correct
5 Correct 145 ms 28536 KB Output is correct
6 Correct 129 ms 28536 KB Output is correct
7 Correct 151 ms 28468 KB Output is correct
8 Correct 149 ms 28588 KB Output is correct
9 Correct 137 ms 28644 KB Output is correct
10 Correct 143 ms 28392 KB Output is correct

Subtask #3
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5084 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5240 KB Output is correct
4 Correct 157 ms 28524 KB Output is correct
5 Correct 145 ms 28536 KB Output is correct
6 Correct 129 ms 28536 KB Output is correct
7 Correct 151 ms 28468 KB Output is correct
8 Correct 149 ms 28588 KB Output is correct
9 Correct 137 ms 28644 KB Output is correct
10 Correct 143 ms 28392 KB Output is correct
11 Correct 17 ms 6008 KB Output is correct
12 Correct 146 ms 28832 KB Output is correct
13 Correct 151 ms 28792 KB Output is correct
14 Correct 137 ms 28792 KB Output is correct
15 Correct 152 ms 28792 KB Output is correct
16 Correct 134 ms 28792 KB Output is correct
17 Correct 154 ms 28664 KB Output is correct
18 Correct 151 ms 28720 KB Output is correct
19 Correct 139 ms 28792 KB Output is correct
20 Correct 153 ms 28792 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 209 ms 23076 KB Output is correct
2 Correct 134 ms 28508 KB Output is correct
3 Correct 278 ms 26488 KB Output is correct
4 Correct 144 ms 23348 KB Output is correct
5 Correct 203 ms 26332 KB Output is correct
6 Correct 136 ms 23560 KB Output is correct
7 Correct 307 ms 26112 KB Output is correct
8 Correct 192 ms 23544 KB Output is correct
9 Correct 141 ms 28536 KB Output is correct
10 Correct 240 ms 25404 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5240 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5112 KB Output is correct
4 Correct 7 ms 5240 KB Output is correct
5 Correct 116 ms 20000 KB Output is correct
6 Correct 65 ms 24828 KB Output is correct
7 Correct 119 ms 23172 KB Output is correct
8 Correct 92 ms 20344 KB Output is correct
9 Correct 113 ms 22208 KB Output is correct
10 Correct 82 ms 20472 KB Output is correct
11 Correct 9 ms 5240 KB Output is correct
12 Correct 7 ms 5368 KB Output is correct
13 Correct 8 ms 5368 KB Output is correct
14 Correct 7 ms 5240 KB Output is correct
15 Correct 8 ms 5368 KB Output is correct
16 Correct 7 ms 5240 KB Output is correct
17 Correct 7 ms 5240 KB Output is correct
18 Correct 8 ms 5368 KB Output is correct
19 Correct 7 ms 5240 KB Output is correct
20 Correct 8 ms 5368 KB Output is correct

Subtask #6
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5240 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5112 KB Output is correct
4 Correct 7 ms 5240 KB Output is correct
5 Correct 116 ms 20000 KB Output is correct
6 Correct 65 ms 24828 KB Output is correct
7 Correct 119 ms 23172 KB Output is correct
8 Correct 92 ms 20344 KB Output is correct
9 Correct 113 ms 22208 KB Output is correct
10 Correct 82 ms 20472 KB Output is correct
11 Correct 6 ms 5084 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 5240 KB Output is correct
14 Correct 157 ms 28524 KB Output is correct
15 Correct 145 ms 28536 KB Output is correct
16 Correct 129 ms 28536 KB Output is correct
17 Correct 151 ms 28468 KB Output is correct
18 Correct 149 ms 28588 KB Output is correct
19 Correct 137 ms 28644 KB Output is correct
20 Correct 143 ms 28392 KB Output is correct
21 Correct 17 ms 6008 KB Output is correct
22 Correct 146 ms 28832 KB Output is correct
23 Correct 151 ms 28792 KB Output is correct
24 Correct 137 ms 28792 KB Output is correct
25 Correct 152 ms 28792 KB Output is correct
26 Correct 134 ms 28792 KB Output is correct
27 Correct 154 ms 28664 KB Output is correct
28 Correct 151 ms 28720 KB Output is correct
29 Correct 139 ms 28792 KB Output is correct
30 Correct 153 ms 28792 KB Output is correct
31 Correct 209 ms 23076 KB Output is correct
32 Correct 134 ms 28508 KB Output is correct
33 Correct 278 ms 26488 KB Output is correct
34 Correct 144 ms 23348 KB Output is correct
35 Correct 203 ms 26332 KB Output is correct
36 Correct 136 ms 23560 KB Output is correct
37 Correct 307 ms 26112 KB Output is correct
38 Correct 192 ms 23544 KB Output is correct
39 Correct 141 ms 28536 KB Output is correct
40 Correct 240 ms 25404 KB Output is correct
41 Correct 9 ms 5240 KB Output is correct
42 Correct 7 ms 5368 KB Output is correct
43 Correct 8 ms 5368 KB Output is correct
44 Correct 7 ms 5240 KB Output is correct
45 Correct 8 ms 5368 KB Output is correct
46 Correct 7 ms 5240 KB Output is correct
47 Correct 7 ms 5240 KB Output is correct
48 Correct 8 ms 5368 KB Output is correct
49 Correct 7 ms 5240 KB Output is correct
50 Correct 8 ms 5368 KB Output is correct
51 Correct 192 ms 23928 KB Output is correct
52 Correct 179 ms 28880 KB Output is correct
53 Correct 232 ms 25716 KB Output is correct
54 Correct 145 ms 23800 KB Output is correct
55 Correct 177 ms 23284 KB Output is correct
56 Correct 146 ms 28664 KB Output is correct
57 Correct 230 ms 26300 KB Output is correct
58 Correct 167 ms 23672 KB Output is correct
59 Correct 227 ms 23800 KB Output is correct
60 Correct 185 ms 28724 KB Output is correct
61 Correct 228 ms 26432 KB Output is correct
62 Correct 147 ms 23732 KB Output is correct
63 Correct 181 ms 23424 KB Output is correct
64 Correct 163 ms 28672 KB Output is correct
65 Correct 252 ms 26124 KB Output is correct
66 Correct 154 ms 23800 KB Output is correct
67 Correct 191 ms 23508 KB Output is correct
68 Correct 192 ms 28884 KB Output is correct
69 Correct 243 ms 25592 KB Output is correct
70 Correct 148 ms 23832 KB Output is correct