結果

問題 No.1917 LCMST
ユーザー tentententen
提出日時 2023-06-29 15:59:57
言語 Java21
(openjdk 21)
結果
AC  
実行時間 2,881 ms / 4,000 ms
コード長 4,506 bytes
コンパイル時間 4,234 ms
コンパイル使用メモリ 94,044 KB
実行使用メモリ 177,016 KB
最終ジャッジ日時 2023-09-20 11:19:32
合計ジャッジ時間 72,454 ms
ジャッジサーバーID
(参考情報)
judge15 / judge12
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 43 ms
49,808 KB
testcase_01 AC 43 ms
49,704 KB
testcase_02 AC 43 ms
49,900 KB
testcase_03 AC 139 ms
56,772 KB
testcase_04 AC 150 ms
54,904 KB
testcase_05 AC 146 ms
56,640 KB
testcase_06 AC 150 ms
56,748 KB
testcase_07 AC 141 ms
57,128 KB
testcase_08 AC 43 ms
49,776 KB
testcase_09 AC 2,546 ms
176,132 KB
testcase_10 AC 2,836 ms
174,944 KB
testcase_11 AC 2,711 ms
175,884 KB
testcase_12 AC 2,251 ms
159,280 KB
testcase_13 AC 1,812 ms
108,636 KB
testcase_14 AC 2,881 ms
172,624 KB
testcase_15 AC 1,430 ms
91,288 KB
testcase_16 AC 1,871 ms
114,348 KB
testcase_17 AC 2,383 ms
140,760 KB
testcase_18 AC 2,190 ms
148,604 KB
testcase_19 AC 1,392 ms
91,204 KB
testcase_20 AC 1,012 ms
90,296 KB
testcase_21 AC 1,310 ms
91,976 KB
testcase_22 AC 1,075 ms
91,804 KB
testcase_23 AC 1,098 ms
90,480 KB
testcase_24 AC 1,318 ms
89,908 KB
testcase_25 AC 1,076 ms
91,184 KB
testcase_26 AC 1,147 ms
91,900 KB
testcase_27 AC 1,248 ms
91,340 KB
testcase_28 AC 1,291 ms
91,512 KB
testcase_29 AC 2,489 ms
166,012 KB
testcase_30 AC 2,433 ms
177,016 KB
testcase_31 AC 2,339 ms
176,164 KB
testcase_32 AC 2,661 ms
176,148 KB
testcase_33 AC 2,469 ms
175,144 KB
testcase_34 AC 375 ms
80,988 KB
testcase_35 AC 373 ms
81,356 KB
testcase_36 AC 372 ms
81,132 KB
testcase_37 AC 2,536 ms
175,380 KB
testcase_38 AC 2,759 ms
175,536 KB
testcase_39 AC 2,421 ms
175,568 KB
testcase_40 AC 2,809 ms
176,308 KB
testcase_41 AC 2,429 ms
175,832 KB
testcase_42 AC 2,576 ms
175,552 KB
testcase_43 AC 569 ms
84,152 KB
testcase_44 AC 539 ms
82,552 KB
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ソースコード

diff #

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<>();
        long ans = 0;
        for (int i = 0; i < n; i++) {
            if (i > 0 && values[i] == values[i - 1]) {
                ans += values[i];
                continue;
            }
            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);
        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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