結果
問題 | No.2157 崖 |
ユーザー |
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提出日時 | 2022-12-26 12:54:55 |
言語 | Java (openjdk 23) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,615 bytes |
コンパイル時間 | 6,150 ms |
コンパイル使用メモリ | 82,372 KB |
実行使用メモリ | 94,008 KB |
最終ジャッジ日時 | 2024-11-20 21:42:14 |
合計ジャッジ時間 | 78,504 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 12 TLE * 10 |
ソースコード
import java.io.*;import java.util.*;import java.util.stream.*;public class Main {static int[][] matrix;public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();int m = sc.nextInt();matrix = new int[n][m];for (int i = 0; i < n; i++) {for (int j = 0; j < m; j++) {matrix[i][j] = sc.nextInt();}Arrays.sort(matrix[i]);}int left = -1;int right = Integer.MAX_VALUE / 2;while (right - left > 1) {int mm = (left + right) / 2;if (check(mm, n - 1)) {right = mm;} else {left = mm;}}if (right >= 1000000000) {System.out.println(-1);} else {System.out.println(right);}}static boolean check(int x, int idx) {boolean ans = false;for (int y : matrix[idx]) {if (check(idx - 1, y, x)) {return true;}}return false;}static boolean check(int idx, int x, int diff) {if (idx < 0) {return true;}for (int y : matrix[idx]) {if (y > x) {return false;}if (y + diff >= x) {if (check(idx -1, y, diff)) {return true;}}}return false;}}class Utilities {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();}}