結果
| 問題 |
No.153 石の山
|
| コンテスト | |
| ユーザー |
fujisu
|
| 提出日時 | 2015-02-21 20:50:44 |
| 言語 | Java (openjdk 23) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,407 bytes |
| コンパイル時間 | 2,686 ms |
| コンパイル使用メモリ | 79,964 KB |
| 実行使用メモリ | 356,452 KB |
| 最終ジャッジ日時 | 2024-10-14 14:03:42 |
| 合計ジャッジ時間 | 12,465 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 6 TLE * 1 -- * 20 |
ソースコード
import java.io.IOException;
import java.util.Comparator;
import java.util.InputMismatchException;
import java.util.TreeMap;
public class Main {
int n;
TreeMap<int[], Integer> dp;
int nim(int[] a) {
if (dp.containsKey(a)) {
return dp.get(a);
}
if (a[1] == n) {
return -1;
}
int res = -1;
for (int i = 2; i < n + 1; i++) {
if (a[i] == 0)
continue;
{
int x = i / 2;
int y = i - x;
int[] tmp = copy(a);
tmp[i]--;
tmp[x]++;
tmp[y]++;
if (nim(tmp) < 0) {
res = 1;
}
}
if (2 < i) {
int x = i / 3;
int y = (i - x) / 2;
int z = i - x - y;
int[] tmp = copy(a);
tmp[i]--;
tmp[x]++;
tmp[y]++;
tmp[z]++;
if (nim(tmp) < 0) {
res = 1;
}
}
}
dp.put(a, res);
return res;
}
int[] copy(int[] a) {
int n = a.length;
int[] res = new int[n];
for (int i = 0; i < n; i++) {
res[i] = a[i];
}
return res;
}
void run() {
MyScanner sc = new MyScanner();
n = sc.nextInt();
int[] a = new int[n + 1];
a[n] = 1;
Comparator<int[]> cmp = new Comparator<int[]>() {
@Override
public int compare(int[] o1, int[] o2) {
int n = o1.length;
if (n != o2.length) {
return n - o2.length;
}
for (int i = 0; i < n; i++) {
if (o1[i] != o2[i]) {
return o1[i] - o2[i];
}
}
return 0;
}
};
dp = new TreeMap<int[], Integer>(cmp);
System.out.println(nim(a) > 0 ? "A" : "B");
}
public static void main(String[] args) {
new Main().run();
}
public void mapDebug(int[][] a) {
System.out.println("--------map display---------");
for (int i = 0; i < a.length; i++) {
for (int j = 0; j < a[i].length; j++) {
System.out.printf("%3d ", a[i][j]);
}
System.out.println();
}
System.out.println("----------------------------" + '\n');
}
class MyScanner {
int read() {
try {
return System.in.read();
} catch (IOException e) {
throw new InputMismatchException();
}
}
boolean isSpaceChar(int c) {
return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
}
boolean isEndline(int c) {
return c == '\n' || c == '\r' || c == -1;
}
int nextInt() {
return Integer.parseInt(next());
}
int[] nextIntArray(int n) {
int[] array = new int[n];
for (int i = 0; i < n; i++)
array[i] = nextInt();
return array;
}
long nextLong() {
return Long.parseLong(next());
}
long[] nextLongArray(int n) {
long[] array = new long[n];
for (int i = 0; i < n; i++)
array[i] = nextLong();
return array;
}
double nextDouble() {
return Double.parseDouble(next());
}
double[] nextDoubleArray(int n) {
double[] array = new double[n];
for (int i = 0; i < n; i++)
array[i] = nextDouble();
return array;
}
String next() {
int c = read();
while (isSpaceChar(c))
c = read();
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isSpaceChar(c));
return res.toString();
}
String[] nextStringArray(int n) {
String[] array = new String[n];
for (int i = 0; i < n; i++)
array[i] = next();
return array;
}
String nextLine() {
int c = read();
while (isEndline(c))
c = read();
StringBuilder res = new StringBuilder();
do {
res.appendCodePoint(c);
c = read();
} while (!isEndline(c));
return res.toString();
}
}
}
fujisu