oj.uz

Submission #676461

# Submission time Handle Problem Language Result Execution time Memory
676461 2022-12-31T03:26:42 Z penguin133 Factories (JOI14_factories) C++17
100 / 100
 5487 ms 243012 KB 
#include <bits/stdc++.h>
#include "factories.h"
using namespace std;

//#define int long long
typedef long long ll;
#define pi pair<ll, ll>
#define pii pair<ll, pi>
#define fi first
#define se second
#define getchar_unlocked getchar_nolock


ll n, m, q;
vector<pi>v[500005];
vector<ll> ct[500005];
ll dep[500005], par[20][500005], sz[500005], vis[500005];
ll dist[500005][20];
ll mn[500005];
ll di[5000005];
void dfs(int x, int p, int d){
	sz[x] = 1;
	for(auto [i, j] : v[x]){
		if(i == p || vis[i])continue;
		dfs(i, x, d + 1);
		sz[x] += sz[i];
	}
}
int rt, lim;
int cent(int x, int p){
	for(auto [i, j] : v[x]){
		if(i == p || vis[i])continue;
		if(sz[i] * 2 > lim)return cent(i, x);
	}
	return x;
}
int lvl = 1;
void dfs2(int x, int p, ll cur){
	dist[x][lvl] = cur;
	for(auto [i, j] : v[x]){
		if(i == p || vis[i])continue;
		dfs2(i, x, cur + j);
	}
}

void proc(int x, int p){
	par[0][x] = p;
	dep[x] = (p == -1 ? 0 : dep[p]) + 1;
	for(auto i : ct[x])if(i != p)proc(i, x);
}
void Init(int N, int A[], int B[], int D[]) {
	for(int i=0;i<N-1;i++)A[i]++, B[i]++, v[A[i]].push_back({B[i], D[i]}), v[B[i]].push_back({A[i], D[i]});
	dfs(1, -1, 1);
	lim = N;
	int x = cent(1, -1);
	rt = x;
	queue<pi>qu;
	qu.push({x, 1});
	//cerr << rt << '\n';
	vis[x] = 1;
	while(!qu.empty()){
		x = qu.front().fi;
		int y = qu.front().se; qu.pop();
		vis[x] = 1;
		lvl = y;
		dfs2(x, -1, 0);
		for(auto [i, j] : v[x]){
			if(vis[i])continue;
			dfs(i, x, 1);
			lim = sz[i];
			int lmao = cent(i, x);
			ct[x].push_back(lmao);
			ct[lmao].push_back(x);
			//cerr << "ADDING EDGE " << x << " " << lmao << "\n";
			qu.push({lmao, y + 1});
		}
	}
	assert(lvl <= 20);
	proc(rt, -1);
	for(int i=1;i<=N;i++)mn[i] = 1e18;
}

long long Query(int S, int X[], int T, int Y[]) {
	vector<int>tmp;
	for(int i=0;i<S;i++)X[i]++;
	for(int i=0;i<T;i++)Y[i]++;
	for(int i=0;i<T;i++){
		int ori = Y[i];
		mn[ori] = 0;
		while(ori != -1){
			mn[ori] = min(mn[ori], dist[Y[i]][dep[ori]]);
			tmp.push_back(ori);
			ori = par[0][ori];
		}
	}
	ll ans =  1e18;
	for(int i=0;i<S;i++){
		ll ans2 = mn[X[i]], ori = X[i];
		while(ori != -1){
			ans2 = min(ans2, mn[ori] + dist[X[i]][dep[ori]]);
			ori = par[0][ori];
		}
		ans = min(ans, ans2);
	}
	for(auto i : tmp)mn[i] = 1e18;
  return ans;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 24452 KB Output is correct
2 Correct 272 ms 42824 KB Output is correct
3 Correct 318 ms 42828 KB Output is correct
4 Correct 295 ms 42768 KB Output is correct
5 Correct 319 ms 43240 KB Output is correct
6 Correct 191 ms 42996 KB Output is correct
7 Correct 294 ms 42804 KB Output is correct
8 Correct 299 ms 43316 KB Output is correct
9 Correct 318 ms 43236 KB Output is correct
10 Correct 194 ms 42876 KB Output is correct
11 Correct 291 ms 42716 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 24072 KB Output is correct
2 Correct 2343 ms 198120 KB Output is correct
3 Correct 3578 ms 200708 KB Output is correct
4 Correct 845 ms 188556 KB Output is correct
5 Correct 4777 ms 219436 KB Output is correct
6 Correct 3619 ms 187108 KB Output is correct
7 Correct 891 ms 77484 KB Output is correct
8 Correct 382 ms 79188 KB Output is correct
9 Correct 1095 ms 82496 KB Output is correct
10 Correct 977 ms 78808 KB Output is correct

Subtask #3
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 24452 KB Output is correct
2 Correct 272 ms 42824 KB Output is correct
3 Correct 318 ms 42828 KB Output is correct
4 Correct 295 ms 42768 KB Output is correct
5 Correct 319 ms 43240 KB Output is correct
6 Correct 191 ms 42996 KB Output is correct
7 Correct 294 ms 42804 KB Output is correct
8 Correct 299 ms 43316 KB Output is correct
9 Correct 318 ms 43236 KB Output is correct
10 Correct 194 ms 42876 KB Output is correct
11 Correct 291 ms 42716 KB Output is correct
12 Correct 15 ms 24072 KB Output is correct
13 Correct 2343 ms 198120 KB Output is correct
14 Correct 3578 ms 200708 KB Output is correct
15 Correct 845 ms 188556 KB Output is correct
16 Correct 4777 ms 219436 KB Output is correct
17 Correct 3619 ms 187108 KB Output is correct
18 Correct 891 ms 77484 KB Output is correct
19 Correct 382 ms 79188 KB Output is correct
20 Correct 1095 ms 82496 KB Output is correct
21 Correct 977 ms 78808 KB Output is correct
22 Correct 2625 ms 209156 KB Output is correct
23 Correct 2664 ms 208184 KB Output is correct
24 Correct 4164 ms 215640 KB Output is correct
25 Correct 4232 ms 217808 KB Output is correct
26 Correct 4059 ms 209056 KB Output is correct
27 Correct 5487 ms 243012 KB Output is correct
28 Correct 984 ms 215016 KB Output is correct
29 Correct 4094 ms 208476 KB Output is correct
30 Correct 4205 ms 208208 KB Output is correct
31 Correct 4120 ms 208568 KB Output is correct
32 Correct 1106 ms 88484 KB Output is correct
33 Correct 389 ms 80304 KB Output is correct
34 Correct 649 ms 75172 KB Output is correct
35 Correct 683 ms 75204 KB Output is correct
36 Correct 876 ms 76064 KB Output is correct
37 Correct 848 ms 75872 KB Output is correct