oj.uz

답안 #240008

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
240008 2020-06-17T17:12:13 Z Knps4422 Election Campaign (JOI15_election_campaign) C++14
100 / 100
 262 ms 30284 KB 
//#pragma optimization_level 3
//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>ordset;
*/
 
#define fr first
#define sc second
#define vec vector
#define pb push_back
#define pii pair<int, int>
#define forn(x,y) for(ll x = 1 ; x <= y ; ++x)
#define all(x) (x).begin(),(x).end()
#define fast cin.tie(0);cout.tie(0);cin.sync_with_stdio(0);cout.sync_with_stdio(0);

using namespace std;
 
typedef long long ll;
typedef unsigned int uint;
typedef pair<ll,ll> pll;
const int nmax = 100005;
const ll linf = 1e17;
const ll mod = 1e9+7;
const int inf = 1e9+7;
const ll lim = 1e4;

int n,m;
vec <int> g[nmax];
int tin[nmax], tout[nmax],tt=1;
int up[nmax][20];
vec < pair < pii , ll > > pth[nmax];
vec < int > vc;

void dfs(int nod, int par){
	up[nod][0] = par;
	tin[nod] = ++tt;
	for(int j : g[nod]){
		if(j != par)
		dfs(j,nod);
	}
	tout[nod] = ++tt;
}

bool anc(int a, int b){
	return ( tin[a] <= tin[b] && tout[a] >= tout[b]);
}

int lca(int a,  int b){
	if(anc(a,b))return a;
	int p = a;
	for(int i = 16 ; i >= 0; i--){
		if(!anc(up[p][i],b)) p = up[p][i];
	}
	return up[p][0];
}

struct {
	ll bit[2*nmax];
	ll query(int pos){
		ll r = 0;
		for(;pos > 0; pos -= pos&-pos){
			r += bit[pos];
		}
		return r;
	}
	void update(int pos , int val){
		for(;pos <= tt ; pos += pos&-pos){
			bit[pos] += val;
		}
	}
	ll range_query(int l , int r){
		return query(r) - query(l-1);
	}

}bt1,bt2;
ll dp[nmax];

void dfs2(int nod, int par){
	for(int j : g[nod]){
		if(j != par)
				dfs2(j,nod);
	}
	ll r = 0;
	for(int j : g[nod]){
		if(j == par)continue;
		r += dp[j];
	}
	ll rez = r;
	bt1.update(tin[nod],r);
	bt2.update(tout[nod],r);
	for(auto path : pth[nod]){
		rez = max( rez, bt1.range_query(tin[nod],tin[path.fr.fr]) - bt2.range_query(tin[nod],tin[path.fr.fr]) 
			+bt1.range_query(tin[nod],tin[path.fr.sc]) - bt2.range_query(tin[nod],tin[path.fr.sc]) - r + path.sc );
	}
	dp[nod] = rez;
	bt1.update(tin[nod],-dp[nod]);
	bt2.update(tout[nod],-dp[nod]);
}
int main(){
	fast;
	cin >> n;
	forn(i,n-1){
		int a, b;
		cin >> a >> b;
		g[a].pb(b);
		g[b].pb(a);
	}
	dfs(1,1);

	for(int i = 1 ; i < 20 ; i++){
		forn(ii,n){
			up[ii][i] = up[up[ii][i-1]][i-1];
		}
	}
	cin >> m;
	forn(i,m){
		int a, b, c;
		cin >> a >> b >> c;
		pth[lca(a,b)].pb({{a,b},c});
	}
	dfs2(1,1);
	cout << dp[1] << '\n';
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5248 KB Output is correct
5 Correct 117 ms 21368 KB Output is correct
6 Correct 69 ms 27616 KB Output is correct
7 Correct 86 ms 25848 KB Output is correct
8 Correct 79 ms 21624 KB Output is correct
9 Correct 96 ms 24568 KB Output is correct
10 Correct 88 ms 21752 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 8 ms 5024 KB Output is correct
3 Correct 8 ms 5248 KB Output is correct
4 Correct 149 ms 29560 KB Output is correct
5 Correct 166 ms 30076 KB Output is correct
6 Correct 134 ms 30200 KB Output is correct
7 Correct 152 ms 30072 KB Output is correct
8 Correct 145 ms 30200 KB Output is correct
9 Correct 146 ms 30112 KB Output is correct
10 Correct 149 ms 30072 KB Output is correct

Subtask #3
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 8 ms 5024 KB Output is correct
3 Correct 8 ms 5248 KB Output is correct
4 Correct 149 ms 29560 KB Output is correct
5 Correct 166 ms 30076 KB Output is correct
6 Correct 134 ms 30200 KB Output is correct
7 Correct 152 ms 30072 KB Output is correct
8 Correct 145 ms 30200 KB Output is correct
9 Correct 146 ms 30112 KB Output is correct
10 Correct 149 ms 30072 KB Output is correct
11 Correct 18 ms 6144 KB Output is correct
12 Correct 153 ms 30284 KB Output is correct
13 Correct 149 ms 30072 KB Output is correct
14 Correct 135 ms 30072 KB Output is correct
15 Correct 143 ms 30072 KB Output is correct
16 Correct 139 ms 30100 KB Output is correct
17 Correct 142 ms 30072 KB Output is correct
18 Correct 142 ms 30072 KB Output is correct
19 Correct 133 ms 30072 KB Output is correct
20 Correct 145 ms 30016 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 161 ms 22896 KB Output is correct
2 Correct 153 ms 30176 KB Output is correct
3 Correct 242 ms 28512 KB Output is correct
4 Correct 131 ms 23784 KB Output is correct
5 Correct 201 ms 27984 KB Output is correct
6 Correct 133 ms 23644 KB Output is correct
7 Correct 205 ms 27584 KB Output is correct
8 Correct 205 ms 23584 KB Output is correct
9 Correct 127 ms 30072 KB Output is correct
10 Correct 204 ms 26344 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5248 KB Output is correct
5 Correct 117 ms 21368 KB Output is correct
6 Correct 69 ms 27616 KB Output is correct
7 Correct 86 ms 25848 KB Output is correct
8 Correct 79 ms 21624 KB Output is correct
9 Correct 96 ms 24568 KB Output is correct
10 Correct 88 ms 21752 KB Output is correct
11 Correct 9 ms 5248 KB Output is correct
12 Correct 8 ms 5376 KB Output is correct
13 Correct 9 ms 5248 KB Output is correct
14 Correct 9 ms 5248 KB Output is correct
15 Correct 9 ms 5248 KB Output is correct
16 Correct 8 ms 5248 KB Output is correct
17 Correct 8 ms 5248 KB Output is correct
18 Correct 8 ms 5376 KB Output is correct
19 Correct 9 ms 5248 KB Output is correct
20 Correct 8 ms 5376 KB Output is correct

Subtask #6
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 7 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5248 KB Output is correct
5 Correct 117 ms 21368 KB Output is correct
6 Correct 69 ms 27616 KB Output is correct
7 Correct 86 ms 25848 KB Output is correct
8 Correct 79 ms 21624 KB Output is correct
9 Correct 96 ms 24568 KB Output is correct
10 Correct 88 ms 21752 KB Output is correct
11 Correct 7 ms 5120 KB Output is correct
12 Correct 8 ms 5024 KB Output is correct
13 Correct 8 ms 5248 KB Output is correct
14 Correct 149 ms 29560 KB Output is correct
15 Correct 166 ms 30076 KB Output is correct
16 Correct 134 ms 30200 KB Output is correct
17 Correct 152 ms 30072 KB Output is correct
18 Correct 145 ms 30200 KB Output is correct
19 Correct 146 ms 30112 KB Output is correct
20 Correct 149 ms 30072 KB Output is correct
21 Correct 18 ms 6144 KB Output is correct
22 Correct 153 ms 30284 KB Output is correct
23 Correct 149 ms 30072 KB Output is correct
24 Correct 135 ms 30072 KB Output is correct
25 Correct 143 ms 30072 KB Output is correct
26 Correct 139 ms 30100 KB Output is correct
27 Correct 142 ms 30072 KB Output is correct
28 Correct 142 ms 30072 KB Output is correct
29 Correct 133 ms 30072 KB Output is correct
30 Correct 145 ms 30016 KB Output is correct
31 Correct 161 ms 22896 KB Output is correct
32 Correct 153 ms 30176 KB Output is correct
33 Correct 242 ms 28512 KB Output is correct
34 Correct 131 ms 23784 KB Output is correct
35 Correct 201 ms 27984 KB Output is correct
36 Correct 133 ms 23644 KB Output is correct
37 Correct 205 ms 27584 KB Output is correct
38 Correct 205 ms 23584 KB Output is correct
39 Correct 127 ms 30072 KB Output is correct
40 Correct 204 ms 26344 KB Output is correct
41 Correct 9 ms 5248 KB Output is correct
42 Correct 8 ms 5376 KB Output is correct
43 Correct 9 ms 5248 KB Output is correct
44 Correct 9 ms 5248 KB Output is correct
45 Correct 9 ms 5248 KB Output is correct
46 Correct 8 ms 5248 KB Output is correct
47 Correct 8 ms 5248 KB Output is correct
48 Correct 8 ms 5376 KB Output is correct
49 Correct 9 ms 5248 KB Output is correct
50 Correct 8 ms 5376 KB Output is correct
51 Correct 184 ms 23668 KB Output is correct
52 Correct 152 ms 30112 KB Output is correct
53 Correct 202 ms 26600 KB Output is correct
54 Correct 136 ms 23796 KB Output is correct
55 Correct 166 ms 23276 KB Output is correct
56 Correct 180 ms 30072 KB Output is correct
57 Correct 186 ms 27252 KB Output is correct
58 Correct 139 ms 23660 KB Output is correct
59 Correct 189 ms 23792 KB Output is correct
60 Correct 146 ms 30072 KB Output is correct
61 Correct 262 ms 27252 KB Output is correct
62 Correct 161 ms 23460 KB Output is correct
63 Correct 199 ms 23072 KB Output is correct
64 Correct 157 ms 30072 KB Output is correct
65 Correct 208 ms 26988 KB Output is correct
66 Correct 141 ms 23824 KB Output is correct
67 Correct 168 ms 23348 KB Output is correct
68 Correct 145 ms 30048 KB Output is correct
69 Correct 217 ms 26100 KB Output is correct
70 Correct 162 ms 23588 KB Output is correct