結果

問題 No.1690 Power Grid
ユーザー tentententen
提出日時 2023-06-28 12:56:31
言語 Java21
(openjdk 21)
結果
AC  
実行時間 386 ms / 3,000 ms
コード長 3,423 bytes
コンパイル時間 2,644 ms
コンパイル使用メモリ 84,564 KB
実行使用メモリ 41,104 KB
最終ジャッジ日時 2024-07-05 05:57:27
合計ジャッジ時間 10,254 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
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 50 ms
37,016 KB
testcase_01 AC 51 ms
36,992 KB
testcase_02 AC 54 ms
36,956 KB
testcase_03 AC 49 ms
36,812 KB
testcase_04 AC 49 ms
37,080 KB
testcase_05 AC 49 ms
36,896 KB
testcase_06 AC 374 ms
41,104 KB
testcase_07 AC 297 ms
40,996 KB
testcase_08 AC 370 ms
41,064 KB
testcase_09 AC 376 ms
40,744 KB
testcase_10 AC 369 ms
40,752 KB
testcase_11 AC 328 ms
40,676 KB
testcase_12 AC 50 ms
37,104 KB
testcase_13 AC 53 ms
36,896 KB
testcase_14 AC 123 ms
38,716 KB
testcase_15 AC 384 ms
41,080 KB
testcase_16 AC 307 ms
40,960 KB
testcase_17 AC 213 ms
39,824 KB
testcase_18 AC 152 ms
39,328 KB
testcase_19 AC 301 ms
40,856 KB
testcase_20 AC 299 ms
40,716 KB
testcase_21 AC 309 ms
40,780 KB
testcase_22 AC 380 ms
40,776 KB
testcase_23 AC 299 ms
40,844 KB
testcase_24 AC 375 ms
40,644 KB
testcase_25 AC 384 ms
40,792 KB
testcase_26 AC 386 ms
40,916 KB
testcase_27 AC 50 ms
36,824 KB
権限があれば一括ダウンロードができます

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 m = sc.nextInt();
        int kk = sc.nextInt();
        int[] costs = new int[n];
        for (int i = 0; i < n; i++) {
            costs[i] = sc.nextInt();
        }
        long[][] distances = new long[n][n];
        for (int i = 0; i < n; i++) {
            Arrays.fill(distances[i], Long.MAX_VALUE / 2);
            distances[i][i] = 0;
        }
        for (int i = 0; i < m; i++) {
            int a = sc.nextInt() - 1;
            int b = sc.nextInt() - 1;
            int c = sc.nextInt();
            distances[a][b] = Math.min(distances[a][b], c);
            distances[b][a] = Math.min(distances[b][a], c);
        }
        for (int a = 0; a < n; a++) {
            for (int b = 0; b < n; b++) {
                for (int c = 0; c < n; c++) {
                    distances[b][c] = Math.min(distances[b][c], distances[b][a] + distances[a][c]);
                }
            }
        }
        long[] dp = new long[1 << n];
        Arrays.fill(dp, Long.MAX_VALUE);
        dp[0] = 0;
        long[] ans = new long[n + 1];
        Arrays.fill(ans, Long.MAX_VALUE);
        ans[0] = 0;
        for (int i = 1; i < (1 << n); i++) {
            int pop = getPop(i);
            for (int j = 0; j < n; j++) {
                if ((i & (1 << j)) == 0) {
                    continue;
                }
                if (pop == 1) {
                    dp[i] = costs[j];
                    break;
                }
                for (int k = 0; k < n; k++) {
                    if ((i & (1 << k)) == 0 || j == k) {
                        continue;
                    }
                    dp[i] = Math.min(dp[i], dp[i ^ (1 << j)] + distances[j][k] + costs[j]);
                }
            }
            ans[pop] = Math.min(ans[pop], dp[i]);
        }
        System.out.println(ans[kk]);
    }
    
    static int getPop(int x) {
        int pop = 0;
        while (x > 0) {
            pop += x % 2;
            x >>= 1;
        }
        return pop;
    }
}
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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