結果
問題 | No.90 品物の並び替え |
ユーザー | tutuz |
提出日時 | 2018-09-22 11:54:31 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 156 ms / 5,000 ms |
コード長 | 4,849 bytes |
コンパイル時間 | 2,875 ms |
コンパイル使用メモリ | 79,024 KB |
実行使用メモリ | 53,124 KB |
最終ジャッジ日時 | 2024-07-18 08:54:48 |
合計ジャッジ時間 | 3,844 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 55 ms
50,548 KB |
testcase_01 | AC | 118 ms
52,820 KB |
testcase_02 | AC | 55 ms
50,464 KB |
testcase_03 | AC | 62 ms
50,848 KB |
testcase_04 | AC | 60 ms
50,540 KB |
testcase_05 | AC | 123 ms
52,948 KB |
testcase_06 | AC | 123 ms
52,880 KB |
testcase_07 | AC | 57 ms
50,092 KB |
testcase_08 | AC | 56 ms
50,500 KB |
testcase_09 | AC | 156 ms
53,124 KB |
ソースコード
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.InputMismatchException; import java.util.StringTokenizer; public class Main { public static void main(String[] args) throws IOException { InputStream inputStream = System.in; OutputStream outputStream = System.out; InputReader in = new InputReader(inputStream); PrintWriter out = new PrintWriter(outputStream); TaskX solver = new TaskX(); solver.solve(1, in, out); out.close(); } static int INF = 1 << 30; static long LINF = 1L << 55; static int MOD = 1000000007; static int[] mh4 = { 0, -1, 1, 0 }; static int[] mw4 = { -1, 0, 0, 1 }; static int[] mh8 = { -1, -1, -1, 0, 0, 1, 1, 1 }; static int[] mw8 = { -1, 0, 1, -1, 1, -1, 0, 1 }; @SuppressWarnings("unchecked") static class TaskX { public void solve(int testNumber, InputReader in, PrintWriter out) { int n = in.nextInt(), m = in.nextInt(); int[] a = new int[n]; for (int i = 0; i < n; i++) { a[i] = i; } long[][] mat = new long[n][n]; fill(mat, 0); for (int i = 0; i < m; i++) { int f = in.nextInt(); int t = in.nextInt(); int c = in.nextInt(); mat[f][t] = c; } long ans = 0; do { long tmp = 0; for (int i = 0; i < n-1; i++) { for (int j = i+1; j < n; j++) { tmp += mat[a[i]][a[j]]; } } ans = Math.max(ans, tmp); } while (Permutation.next(a)); out.println(ans); } } static void fill(long[][] mat, long v) { for (int i = 0; i < mat.length; i++) { Arrays.fill(mat[i], v); } } static class P { int t, c; public P(int t, int c) { super(); this.t = t; this.c = c; } } /** * 順列(N!) * * @input {0 ~ n-1}の数が入った配列 ※配列は sort 済であること!! * @output 順列に並びられた1回分の配列 a[] * 配列 a[] の中の値が順列される。(次の順列になる) * * @sample * while(Permutation.next(a)) { * array[a[i]][a[i+1]] * } * * */ static class Permutation { // array ver public static boolean next(int[] a) { int n = a.length; int i = n - 1; while (i > 0 && a[i - 1] >= a[i]) i--; if (i <= 0) return false; int j = n - 1; while (a[j] <= a[i - 1]) j--; swap(a, i - 1, j); int k = n - 1; while (i < k) swap(a, i++, k--); return true; } private static void swap(int[] a, int i, int j) { int tmp = a[i]; a[i] = a[j]; a[j] = tmp; } // strings ver public static boolean next(char[] a) { int n = a.length; int i = n - 1; while (i > 0 && a[i - 1] >= a[i]) i--; if (i <= 0) return false; int j = n - 1; while (a[j] <= a[i - 1]) j--; swap(a, i - 1, j); int k = n - 1; while (i < k) swap(a, i++, k--); return true; } private static void swap(char[] a, int i, int j) { char tmp = a[i]; a[i] = a[j]; a[j] = tmp; } } static class InputReader { BufferedReader in; StringTokenizer tok; public String nextString() { while (!tok.hasMoreTokens()) { try { tok = new StringTokenizer(in.readLine(), " "); } catch (IOException e) { throw new InputMismatchException(); } } return tok.nextToken(); } public int nextInt() { return Integer.parseInt(nextString()); } public long nextLong() { return Long.parseLong(nextString()); } public double nextDouble() { return Double.parseDouble(nextString()); } public int[] nextIntArray(int n) { int[] res = new int[n]; for (int i = 0; i < n; i++) { res[i] = nextInt(); } return res; } public int[] nextIntArrayDec(int n) { int[] res = new int[n]; for (int i = 0; i < n; i++) { res[i] = nextInt() - 1; } return res; } public int[] nextIntArray1Index(int n) { int[] res = new int[n + 1]; for (int i = 0; i < n; i++) { res[i + 1] = nextInt(); } return res; } public long[] nextLongArray(int n) { long[] res = new long[n]; for (int i = 0; i < n; i++) { res[i] = nextLong(); } return res; } public long[] nextLongArrayDec(int n) { long[] res = new long[n]; for (int i = 0; i < n; i++) { res[i] = nextLong() - 1; } return res; } public long[] nextLongArray1Index(int n) { long[] res = new long[n + 1]; for (int i = 0; i < n; i++) { res[i + 1] = nextLong(); } return res; } public double[] nextDoubleArray(int n) { double[] res = new double[n]; for (int i = 0; i < n; i++) { res[i] = nextDouble(); } return res; } public InputReader(InputStream inputStream) { in = new BufferedReader(new InputStreamReader(inputStream)); tok = new StringTokenizer(""); } } }