oj.uz

Submission #111130

# Submission time Handle Problem Language Result Execution time Memory
111130 2019-05-13T18:00:18 Z Plasmatic Factories (JOI14_factories) C++11
100 / 100
 6956 ms 218696 KB 
//============================================================================
// Name        : joi14p1.cpp
// Author      :
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include "factories.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

// Scan and Debug
void scan(){}
template<typename F, typename... R> void scan(F &f,R&... r){cin>>f;scan(r...);}
int di_; string dnms_, co_ = ",";
void debug_(){cout<<endl;}
template<typename F, typename... R> void debug_(F f, R... r){while(dnms_[di_] != ',')cout<<dnms_[di_++];di_++;cout<<": "<<f<<",";debug_(r...);}
#define debug(...) dnms_=#__VA_ARGS__+co_,di_=0,debug_(__VA_ARGS__)

const int MAX = 500001;

struct ed {
	int v, w;
};

vector<ed> matrix[MAX];
const ll INF = 0x3f3f3f3f3f3f3f3f;
int N,
	sz[MAX], par[MAX], lv[MAX];
bool blocked[MAX];
ll bestFor[MAX];
vector<ll> dis[MAX];

int gsz(int cur, int par) {
	sz[cur] = 1;
	for (ed adj : matrix[cur])
		if ((adj.v ^ par) && !blocked[adj.v])
			sz[cur] += gsz(adj.v, cur);
	return sz[cur];
}

int gcentroid(int cur, int par, int half) {
	for (ed adj : matrix[cur])
		if ((adj.v ^ par) && !blocked[adj.v] && sz[adj.v] > half)
			return gcentroid(adj.v, cur, half);
	return cur;
}

void dfs(int cur, int par=-1, ll __dis=0) {
	dis[cur].push_back(__dis);
	for (ed adj : matrix[cur])
		if ((adj.v ^ par) && !blocked[adj.v])
			dfs(adj.v, cur, __dis + adj.w);
}

int nxt[MAX], tpar[MAX], nxtPtr = -1;
ll tdis[MAX];

int decomp(int cur=0, int __par=-1, int __lv=0) {
	gsz(cur, __par);
	if (sz[cur] == 1) {// If size is one, centroid is self
		lv[cur] = __lv;
		return cur;
	}

	int centroid = gcentroid(cur, __par, sz[cur] >> 1);
	lv[centroid] = __lv;
	blocked[centroid] = true;

	dis[centroid].push_back(0);
	tpar[centroid] = -1;
	tdis[centroid] = 0;
	nxt[++nxtPtr] = centroid;
	while (nxtPtr >= 0) {
		int cur = nxt[nxtPtr]; nxtPtr--;
		for (ed adj : matrix[cur]) {
			if ((adj.v ^ tpar[cur]) && !blocked[adj.v]) {
				nxt[++nxtPtr] = adj.v;
				tpar[adj.v] = cur;
				tdis[adj.v] = tdis[cur] + adj.w;
				dis[adj.v].push_back(tdis[adj.v]);
			}
		}
	}

	for (ed adj : matrix[centroid])
		if (!blocked[adj.v])
			par[decomp(adj.v, centroid, __lv + 1)] = centroid;

	return centroid;
}

// Grader Functions
void Init(int N_, int A[], int B[], int D[]) {
	N = N_;
	for (int i = 0; i < N - 1; i++) {
		matrix[A[i]].push_back({B[i], D[i]});
		matrix[B[i]].push_back({A[i], D[i]});
	}

	// Init Centroid Tree
	par[decomp()] = -1;
	memset(bestFor, 0x3f, sizeof bestFor);
}

int back[20000001], backSz = 0;

long long Query(int S, int X[], int T, int Y[]) {
	ll best = INF;
	backSz = 0;

	for (int i = 0; i < T; i++) {
		for (int cur = Y[i], clv = lv[cur]; cur != -1; cur = par[cur], clv--) {
			bestFor[cur] = min(bestFor[cur], dis[Y[i]][clv]), assert(cur != par[cur]);
			back[backSz++] = cur;
		}
	}

	for (int i = 0; i < S; i++)
		for (int cur = X[i], clv = lv[cur]; cur != -1; cur = par[cur], clv--)
			best = min(best, dis[X[i]][clv] + bestFor[cur]), assert(cur != par[cur]);

	for (int i = 0; i < backSz; i++)
		bestFor[back[i]] = INF;

	return best;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 28280 KB Output is correct
2 Correct 512 ms 37112 KB Output is correct
3 Correct 410 ms 37240 KB Output is correct
4 Correct 403 ms 37452 KB Output is correct
5 Correct 434 ms 37560 KB Output is correct
6 Correct 294 ms 36728 KB Output is correct
7 Correct 431 ms 37176 KB Output is correct
8 Correct 403 ms 37368 KB Output is correct
9 Correct 441 ms 37624 KB Output is correct
10 Correct 265 ms 36728 KB Output is correct
11 Correct 398 ms 37208 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 27896 KB Output is correct
2 Correct 3256 ms 135944 KB Output is correct
3 Correct 5153 ms 161780 KB Output is correct
4 Correct 1218 ms 89624 KB Output is correct
5 Correct 6246 ms 215516 KB Output is correct
6 Correct 5140 ms 162896 KB Output is correct
7 Correct 1564 ms 59768 KB Output is correct
8 Correct 555 ms 49640 KB Output is correct
9 Correct 1638 ms 62328 KB Output is correct
10 Correct 1520 ms 60920 KB Output is correct

Subtask #3
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 28280 KB Output is correct
2 Correct 512 ms 37112 KB Output is correct
3 Correct 410 ms 37240 KB Output is correct
4 Correct 403 ms 37452 KB Output is correct
5 Correct 434 ms 37560 KB Output is correct
6 Correct 294 ms 36728 KB Output is correct
7 Correct 431 ms 37176 KB Output is correct
8 Correct 403 ms 37368 KB Output is correct
9 Correct 441 ms 37624 KB Output is correct
10 Correct 265 ms 36728 KB Output is correct
11 Correct 398 ms 37208 KB Output is correct
12 Correct 26 ms 27896 KB Output is correct
13 Correct 3256 ms 135944 KB Output is correct
14 Correct 5153 ms 161780 KB Output is correct
15 Correct 1218 ms 89624 KB Output is correct
16 Correct 6246 ms 215516 KB Output is correct
17 Correct 5140 ms 162896 KB Output is correct
18 Correct 1564 ms 59768 KB Output is correct
19 Correct 555 ms 49640 KB Output is correct
20 Correct 1638 ms 62328 KB Output is correct
21 Correct 1520 ms 60920 KB Output is correct
22 Correct 3923 ms 138188 KB Output is correct
23 Correct 4228 ms 140032 KB Output is correct
24 Correct 6330 ms 166500 KB Output is correct
25 Correct 6483 ms 170124 KB Output is correct
26 Correct 5744 ms 164284 KB Output is correct
27 Correct 6956 ms 218696 KB Output is correct
28 Correct 1576 ms 93912 KB Output is correct
29 Correct 5804 ms 163704 KB Output is correct
30 Correct 5671 ms 163232 KB Output is correct
31 Correct 6186 ms 163784 KB Output is correct
32 Correct 1674 ms 65808 KB Output is correct
33 Correct 537 ms 50056 KB Output is correct
34 Correct 972 ms 54480 KB Output is correct
35 Correct 1177 ms 54792 KB Output is correct
36 Correct 1491 ms 57928 KB Output is correct
37 Correct 1446 ms 57848 KB Output is correct