結果
| 問題 |
No.1917 LCMST
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-06-29 15:56:17 |
| 言語 | Java (openjdk 23) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 4,377 bytes |
| コンパイル時間 | 2,570 ms |
| コンパイル使用メモリ | 97,268 KB |
| 実行使用メモリ | 42,792 KB |
| 最終ジャッジ日時 | 2024-07-06 06:43:48 |
| 合計ジャッジ時間 | 14,252 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 6 TLE * 1 -- * 35 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.stream.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner();
int n = sc.nextInt();
int[] values = new int[n];
for (int i = 0; i < n; i++) {
values[i] = sc.nextInt();
}
Arrays.sort(values);
HashMap<Integer, ArrayList<Integer>> idxes = new HashMap<>();
for (int i = 0; i < n; i++) {
for (int j = 1; j <= Math.sqrt(values[i]); j++) {
if (values[i] % j == 0) {
if (!idxes.containsKey(j)) {
idxes.put(j, new ArrayList<>());
}
idxes.get(j).add(i);
if (j * j < values[i]) {
if (!idxes.containsKey(values[i] / j)) {
idxes.put(values[i] / j, new ArrayList<>());
}
idxes.get(values[i] / j).add(i);
}
}
}
}
PriorityQueue<Bridge> queue = new PriorityQueue<>();
for (int x : idxes.keySet()) {
long base = values[idxes.get(x).get(0)] / x;
for (int i = 1; i < idxes.get(x).size(); i++) {
queue.add(new Bridge(idxes.get(x).get(0), idxes.get(x).get(i), base * values[idxes.get(x).get(i)]));
}
}
UnionFindTree uft = new UnionFindTree(n);
long ans = 0;
while (queue.size() > 0) {
Bridge b = queue.poll();
if (!uft.same(b)) {
uft.unite(b);
ans += b.value;
}
}
System.out.println(ans);
}
static class Bridge implements Comparable<Bridge> {
int left;
int right;
long value;
public Bridge(int left, int right, long value) {
this.left = left;
this.right = right;
this.value = value;
}
public int compareTo(Bridge another) {
if (value == another.value) {
return 0;
} else if (value < another.value) {
return -1;
} else {
return 1;
}
}
}
static class UnionFindTree {
int[] parents;
public UnionFindTree(int size) {
parents = new int[size];
for (int i = 0; i < size; i++) {
parents[i] = i;
}
}
public int find(int x) {
if (x == parents[x]) {
return x;
} else {
return parents[x] = find(parents[x]);
}
}
public boolean same(int x, int y) {
return find(x) == find(y);
}
public boolean same(Bridge x) {
return same(x.left, x.right);
}
public void unite(int x, int y) {
parents[find(x)] = find(y);
}
public void unite(Bridge b) {
unite(b.left, b.right);
}
}
}
class Utilities {
static String arrayToLineString(Object[] arr) {
return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
}
static String arrayToLineString(int[] arr) {
return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
}
}
class Scanner {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
public Scanner() throws Exception {
}
public int nextInt() throws Exception {
return Integer.parseInt(next());
}
public long nextLong() throws Exception {
return Long.parseLong(next());
}
public double nextDouble() throws Exception {
return Double.parseDouble(next());
}
public int[] nextIntArray() throws Exception {
return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
}
public String next() throws Exception {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
return st.nextToken();
}
}
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