結果
| 問題 |
No.1345 Beautiful BINGO
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-05-28 09:17:29 |
| 言語 | Java (openjdk 23) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 4,031 bytes |
| コンパイル時間 | 4,613 ms |
| コンパイル使用メモリ | 89,400 KB |
| 実行使用メモリ | 169,536 KB |
| 最終ジャッジ日時 | 2024-11-07 00:34:41 |
| 合計ジャッジ時間 | 16,707 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 24 TLE * 1 -- * 36 |
ソースコード
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.HashMap;
import java.util.stream.Collectors;
public class No1345 {
public static class Combination {
public static List<List<Integer>> make (List<Integer> candidate, int r) {
if (candidate.size() < r || candidate.size() <= 0 || r <= 0) {
List<List<Integer>> empty = new ArrayList<>();
empty.add(new ArrayList<>());
return empty;
}
List<List<Integer>> combination = new ArrayList<>();
for (int i = 0; i <= candidate.size() - r; i++) {
Integer picked = candidate.get(i);
List<Integer> rest = new ArrayList<>(candidate);
rest.subList(0, i + 1).clear();
combination.addAll(make(rest, r - 1).stream().map(list -> {
list.add(0, picked);
return list;
}).collect(Collectors.toList()));
}
return combination;
}
}
private static class Row {
public List<Integer> row;
public List<Integer> diag;
public int cnt;
public int[] col;
public int size;
public Row(int n) {
row = new ArrayList<Integer>();
diag = new ArrayList<Integer>();
cnt = 0;
col = new int[n];
size = 0;
}
public Row(Row r) {
row = r.row;
diag = new ArrayList<Integer>();
cnt = r.cnt;
col = new int[r.col.length];
size = r.size;
}
public void SetCol(int[][] A) {
for (int i=0; i < col.length; i++) {
for (int j : row) {
if (!ContainDiag(j, i)) {
col[i] += A[j][i];
}
}
}
}
public void SetDiag(int row, int col) {
int i = (row << 16) + col;
if (!diag.contains(i)) {
diag.add(i);
}
}
public boolean ContainDiag(int row, int col) {
int i = (row << 16) + col;
return diag.contains(i);
}
}
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int N = scan.nextInt();
int M = scan.nextInt();
int[] RowSum = new int[N];
int[][] A = new int[N][N];
for (int i=0; i < N; i++) {
int sum = 0;
for (int j=0; j < N; j++) {
int a = scan.nextInt();
sum += a;
A[i][j] = a;
}
RowSum[i] = sum;
}
scan.close();
Row[] RowBlt = new Row[1<<(N+2)];
for (int i=0; i < 1 << (N+2); i++) {
Row row = null;
if ((i & (3 << N)) == 0) {
row = new Row(N);
for (int j=0; j < N; j++) {
if ((i & (1 << j)) != 0) {
row.cnt += RowSum[j];
row.size++;
} else {
row.row.add(j);
}
}
} else {
row = new Row(RowBlt[i & ((1 << N) - 1)]);
for (int j = 0; j < N; j++) {
if (row.row.contains(j)) {
if ((i & (1 << N)) != 0) {
row.cnt += A[j][j];
row.SetDiag(j, j);
}
if ((i & (1 << (N+1))) != 0) {
if (!row.ContainDiag(j, N-1-j)) {
row.cnt += A[j][N-1-j];
row.SetDiag(j, N-1-j);
}
}
}
}
if ((i & (1 << N)) != 0) {
row.size++;
}
if ((i & (1 << (N+1))) != 0) {
row.size++;
}
}
row.SetCol(A);
RowBlt[i] = row;
}
List<Integer> Range = new ArrayList<Integer>();
for (int i=0; i < N; i++) {
Range.add(i);
}
int ans = Integer.MAX_VALUE;
HashMap<Integer, List<List<Integer>>> combDict = new HashMap<Integer, List<List<Integer>>>();
for (Row row : RowBlt) {
if (row.size > M || M - row.size > N) {
continue;
} else if (row.size == M) {
ans = Math.min(ans, row.cnt);
} else {
if (row.cnt >= ans) {
continue;
}
List<List<Integer>> combination = null;
if (combDict.containsKey(M-row.size)) {
combination = combDict.get(M-row.size);
} else {
combination = Combination.make(Range, M-row.size);
combDict.put(M-row.size, combination);
}
for (List<Integer> comb : combination) {
int n = 0;
for (int c : comb) {
n += row.col[c];
if (row.cnt + n >= ans) {
break;
}
}
ans = Math.min(ans, row.cnt + n);
}
}
}
System.out.println(ans);
}
}