結果
| 問題 | No.1400 すごろくで世界旅行 |
| ユーザー |
 CuriousFairy315
|
| 提出日時 | 2021-01-17 00:32:28 |
| 言語 | Java21 (openjdk 21) |
| 結果 |
AC
|
| 実行時間 | 1,176 ms / 3,153 ms |
| コード長 | 9,393 bytes |
| コンパイル時間 | 2,710 ms |
| コンパイル使用メモリ | 80,260 KB |
| 実行使用メモリ | 64,052 KB |
| 最終ジャッジ日時 | 2024-11-28 15:57:02 |
| 合計ジャッジ時間 | 8,766 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge1 |
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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 | 57 ms
50,268 KB |
| testcase_01 | AC | 56 ms
50,240 KB |
| testcase_02 | AC | 56 ms
50,304 KB |
| testcase_03 | AC | 92 ms
51,260 KB |
| testcase_04 | AC | 61 ms
50,304 KB |
| testcase_05 | AC | 62 ms
50,300 KB |
| testcase_06 | AC | 125 ms
52,164 KB |
| testcase_07 | AC | 146 ms
54,548 KB |
| testcase_08 | AC | 95 ms
51,212 KB |
| testcase_09 | AC | 91 ms
51,604 KB |
| testcase_10 | AC | 115 ms
52,236 KB |
| testcase_11 | AC | 86 ms
51,128 KB |
| testcase_12 | AC | 225 ms
56,584 KB |
| testcase_13 | AC | 563 ms
63,888 KB |
| testcase_14 | AC | 1,176 ms
63,980 KB |
| testcase_15 | AC | 766 ms
64,052 KB |
| testcase_16 | AC | 338 ms
63,208 KB |
| testcase_17 | AC | 336 ms
63,512 KB |
| testcase_18 | AC | 464 ms
63,632 KB |
| testcase_19 | AC | 57 ms
50,256 KB |
| testcase_20 | AC | 58 ms
49,800 KB |
ソースコード
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.BitSet;
import java.util.NoSuchElementException;
public class Main {
public static void main(final String[] args) {
new Main();
}
public Main() {
final InputChecker ic = new InputChecker(System.in);
final java.io.PrintWriter out = new java.io.PrintWriter(System.out);
solve(ic, out);
out.flush();
}
public void solve(final InputChecker ic, final java.io.PrintWriter out) {
final int V = ic.nextInt(1, 2000);
ic.nextChar(' ');
final long D = ic.nextLong(1, exponent10L(1, 18));
ic.readNewLine();
final char[][] E = new char[V][];
final CharSet charSet = new CharSet();
charSet.add('0', '1');
for (int i = 0;i < V;++ i) {
E[i] = ic.next(charSet).toCharArray();
if (E[i].length != V) throw new AssertionError();
ic.readNewLine();
}
ic.checkEOF();
for (int i = 0;i < V;++ i) {
for (int j = 0;j < V;++ j) {
if (E[i][j] != E[j][i]) throw new AssertionError();
}
}
final BitSet[] graph = new BitSet[V];
for (int i = 0;i < V;++ i) {
graph[i] = new BitSet(V);
for (int j = 0;j < V;++ j) graph[i].set(j, E[i][j] == '1');
}
boolean ans = graph[0].cardinality() > 0;
for (int i = 0;i < V;++ i) {
BitSet now = (BitSet)graph[i].clone(), one = new BitSet(V), two = new BitSet(V), three = new BitSet(V);
one.set(i);
for (int j = 1;j < D;++ j) {
final BitSet check = (BitSet)now.clone();
check.xor(two);
if (check.isEmpty()) break;
two = (BitSet)one.clone();
for (int k = check.nextSetBit(0);k >= 0;k = check.nextSetBit(k + 1)) one.or(graph[k]);
three = now;
now = one;
one = three;
}
ans &= now.cardinality() == V;
}
out.println(ans ? "Yes" : "No");
}
public static int exponent10(final int n, final int e) {
return n * pow(10, e);
}
public static long exponent10L(final int n, final int e) {
return n * pow(10L, e);
}
public static int pow(final int a, int b) {
int ans = 1;
for (int mul = a;b > 0;b >>= 1, mul *= mul) if ((b & 1) != 0) ans *= mul;
return ans;
}
public static long pow(final long a, long b) {
long ans = 1;
for (long mul = a;b > 0;b >>= 1, mul *= mul) if ((b & 1) != 0) ans *= mul;
return ans;
}
public static class CharSet {
private final BitSet set = new BitSet(256);
public void add(final char... c) {
for (final char i : c) set.set(i);
}
public void add(final CharSet... s) {
for (final CharSet i : s) set.or(i.set);
}
public boolean contains(final char... c) {
for (final char i : c) if (!set.get(i)) return false;
return true;
}
public boolean contains(final String s) {
return contains(s.toCharArray());
}
private static final class Chars extends CharSet {
public Chars(final char... c) {
super.add(c);
}
public Chars(final CharSet... s) {
super.add(s);
}
@Override
public void add(final char... c) {
throw new UnsupportedOperationException();
}
@Override
public void add(final CharSet... s) {
throw new UnsupportedOperationException();
}
}
public static final CharSet NUMBER = new Chars('0','1','2','3','4','5','6','7','8','9');
public static final CharSet LOWER = new Chars('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z');
public static final CharSet UPPER = new Chars('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');
public static final CharSet ALPHABET = new Chars(LOWER, UPPER);
}
public static class InputChecker {
private InputStream in;
private final byte[] buffer = new byte[1024];
private final byte[] undo = new byte[1024];
private int undoSize = 0;
private int read = 0;
private int length = 0;
public InputChecker(final InputStream in) {
this.in = in;
}
public final void setInputStream(final InputStream in) {
this.in = in;
}
public final void setInputStream(final File in) {
try {
this.in = new FileInputStream(in);
} catch (final FileNotFoundException e) {
e.printStackTrace();
}
}
private boolean hasNextByte() {
if (undoSize > 0) return true;
if (read < length) return true;
read = 0;
try {
length = in.read(buffer);
} catch (final IOException e) {
e.printStackTrace();
}
return length > 0;
}
private byte readByte() {
if (hasNextByte()) return undoSize > 0 ? undo[--undoSize] : buffer[read++];
throw new NoSuchElementException();
}
private void undo(final byte b) {
undo[undoSize ++] = b;
}
private void undo(final char c) {
if ((c & 0xFF80) == 0) {
undo((byte)c);
return;
}
undo((byte)(c & 0x3F | 0x80));
if ((c & 0xF800) == 0) {
undo((byte)(c >> 6 & 0x1F | 0xC0));
} else {
undo((byte)(c >> 6 & 0x3F | 0x80));
undo((byte)(c >> 12 | 0xE0));
}
}
public final boolean hasNext() {
return hasNextByte();
}
public final char nextChar() {
final byte b = readByte();
if ((b & 0x80) == 0) return (char)b;
if ((b & 0x20) == 0) return (char)((b & 0x1F) << 6 | readByte() & 0x3F);
return (char)((b & 0xF) << 12 | (readByte() & 0x3F) << 6 | readByte() & 0x3F);
}
public final char nextChar(final char estimate) {
final char c = nextChar();
if (estimate == c) return estimate;
undo(c);
throw new AssertionError();
}
public final char nextChar(final CharSet estimate) {
final char c = nextChar();
if (estimate.contains(c)) return c;
undo(c);
throw new AssertionError();
}
public final void readNewLine() {
char c = nextChar();
if (c == '\r') {
c = nextChar();
if (c != '\n') undo(c);
return;
} else if (c == '\n') return;
undo(c);
throw new AssertionError();
}
public final void checkEOF() {
if (hasNextByte()) throw new AssertionError();
}
public final String next(final CharSet contains) {
final StringBuilder sb = new StringBuilder();
try {
do {
final char c = nextChar();
if (!contains.contains(c)) {
undo(c);
return sb.toString();
}
sb.append(c);
} while(true);
} catch (final NoSuchElementException e) {
if (sb.length() <= 0) throw new AssertionError();
return sb.toString();
}
}
public final int nextInt() {
byte b = readByte();
int n = 0;
if (b == '-') {
if (!isNumber(b = readByte())) {
undo(b);
throw new NumberFormatException();
}
try {
if (b == '0') {
if (!isNumber(b = readByte())) {
undo(b);
return 0;
}
throw new NumberFormatException();
}
do n = Math.addExact(Math.multiplyExact(n, 10), '0' - b); while(isNumber(b = readByte()));
undo(b);
} catch (final NoSuchElementException e) {
}
return n;
}
if (!isNumber(b)) {
undo(b);
throw new NumberFormatException();
}
try {
if (b == '0') {
if (!isNumber(b = readByte())) {
undo(b);
return 0;
}
throw new NumberFormatException();
}
do n = Math.addExact(Math.multiplyExact(n, 10), b - '0'); while(isNumber(b = readByte()));
undo(b);
} catch (final NoSuchElementException e) {
}
return n;
}
public final int nextInt(final int min, final int max) {
final int n = nextInt();
if (min <= n && n <= max) return n;
throw new NumberFormatException();
}
private static boolean isNumber(final byte c) {
return '0' <= c && c <= '9';
}
public final long nextLong() {
byte b = readByte();
long n = 0;
if (b == '-') {
if (!isNumber(b = readByte())) {
undo(b);
throw new NumberFormatException();
}
try {
if (b == '0') {
if (!isNumber(b = readByte())) {
undo(b);
return 0;
}
throw new NumberFormatException();
}
do n = Math.addExact(Math.multiplyExact(n, 10), '0' - b); while(isNumber(b = readByte()));
undo(b);
} catch (final NoSuchElementException e) {
}
return n;
}
if (!isNumber(b)) {
undo(b);
throw new NumberFormatException();
}
try {
if (b == '0') {
if (!isNumber(b = readByte())) {
undo(b);
return 0;
}
throw new NumberFormatException();
}
do n = Math.addExact(Math.multiplyExact(n, 10), b - '0'); while(isNumber(b = readByte()));
undo(b);
} catch (final NoSuchElementException e) {
}
return n;
}
public final long nextLong(final long min, final long max) {
final long n = nextLong();
if (min <= n && n <= max) return n;
throw new NumberFormatException();
}
public final double nextDouble() {
final StringBuilder sb = new StringBuilder();
byte b = readByte();
if (b == '-') {
sb.append(b);
b = readByte();
}
if (b == '0') {
sb.append(b);
b = readByte();
} else {
while(isNumber(b)) {
sb.append(b);
b = readByte();
}
}
if (b == '.') {
sb.append(b);
b = readByte();
while(isNumber(b)) {
sb.append(b);
b = readByte();
}
}
if (b == 'e' || b == 'E') {
sb.append(b);
b = readByte();
if (b == '-' || b == '+') {
sb.append(b);
b = readByte();
}
while(isNumber(b)) {
sb.append(b);
b = readByte();
}
}
undo(b);
return Double.parseDouble(sb.toString());
}
}
}