結果
| 問題 | No.1777 万華鏡美術館 |
| ユーザー |
 CuriousFairy315
|
| 提出日時 | 2021-12-04 19:45:02 |
| 言語 | Java21 (openjdk 21) |
| 結果 |
AC
|
| 実行時間 | 68 ms / 3,153 ms |
| コード長 | 10,640 bytes |
| コンパイル時間 | 4,826 ms |
| コンパイル使用メモリ | 91,728 KB |
| 実行使用メモリ | 50,640 KB |
| 最終ジャッジ日時 | 2024-07-07 20:21:23 |
| 合計ジャッジ時間 | 7,183 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge2 |
（要ログイン）
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 | 58 ms
49,996 KB |
| testcase_01 | AC | 56 ms
49,932 KB |
| testcase_02 | AC | 57 ms
50,288 KB |
| testcase_03 | AC | 56 ms
50,144 KB |
| testcase_04 | AC | 59 ms
50,244 KB |
| testcase_05 | AC | 61 ms
49,840 KB |
| testcase_06 | AC | 62 ms
49,996 KB |
| testcase_07 | AC | 68 ms
50,640 KB |
| testcase_08 | AC | 60 ms
50,220 KB |
| testcase_09 | AC | 66 ms
50,476 KB |
| testcase_10 | AC | 57 ms
49,852 KB |
| testcase_11 | AC | 62 ms
50,272 KB |
| testcase_12 | AC | 57 ms
50,284 KB |
ソースコード
package yukicoder_7273;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.Comparator;
import java.util.NoSuchElementException;
import java.util.PriorityQueue;
import java.util.TreeMap;
public class Main {
public static void main(String[] args) {
new Main();
}
public Main() {
InputChecker ic = new InputChecker(System.in);
java.io.PrintWriter out = new java.io.PrintWriter(System.out);
solve(ic, out);
out.flush();
}
public void solve(InputChecker ic, java.io.PrintWriter out) {
int N = ic.nextInt(3, 500);
ic.nextChar(' ');
int M = ic.nextInt(0, exponent10(1, 5));
ic.readNewLine();
int[] u = new int[M], v = new int[M];
for (int i = 0;i < M;++ i) {
u[i] = ic.nextInt(1, N) - 1;
ic.nextChar(' ');
v[i] = ic.nextInt(u[i] + 2, N) - 1;
ic.readNewLine();
}
ic.checkEOF();
ArrayList<TreeMap<Integer, Edge>> graph = new ArrayList<>(N);
for (int i = 0;i < N;++ i) graph.add(new TreeMap<>());
PriorityQueue<Edge> check = new PriorityQueue<>();
for (int i = 0;i < M;++ i) {
Edge e = new Edge(u[i], v[i]);
graph.get(e.u).put(e.dist(e.u, N), e);
graph.get(e.v).put(e.dist(e.v, N), e);
}
for (int i = 0;i < N;++ i) {
Edge e = new Edge(i, (i + 1) % N);
e.outerDistance = 0;
graph.get(e.u).put(e.dist(e.u, N), e);
graph.get(e.v).put(e.dist(e.v, N), e);
check.add(e);
}
for (int i = 0;i < N;++ i) {
if (graph.get(i).size() % 2 != 0) {
out.println(5); // 面が二部グラフではない⇔Gがオイラーグラフではない
return;
}
}
while(!check.isEmpty()) {
Edge e = check.poll();
if (e.remove) continue;
int now = e.u;
if (graph.get(now).lastEntry().getValue().getTarget(now) != e.v) now = e.v;
int move = N - e.dist(e.getTarget(now), N), distance = e.outerDistance, face = 1;
graph.get(e.u).remove(e.dist(e.u, N));
graph.get(e.v).remove(e.dist(e.v, N));
while(move > 0) {
e = graph.get(now).floorEntry(move).getValue();
if (e.outerDistance < 0) {
e.outerDistance = distance + 1;
check.add(e);
} else {
graph.get(e.u).remove(e.dist(e.u, N));
graph.get(e.v).remove(e.dist(e.v, N));
e.remove = true;
}
++ face;
move -= e.dist(now, N);
now = e.getTarget(now);
}
if (distance % 2 == 0 && face % 2 != 0) {
out.println(5); // ある内平面が奇閉路で構成されていて、かつ外平面と異なる色で塗られる
return;
}
}
out.println(4);
}
static class Edge implements Comparable<Edge>{
int u, v;
int outerDistance = -1;
boolean remove = false;
Edge(int u, int v) {
this.u = u;
this.v = v;
}
int getTarget(int source) {
return source ^ u ^ v;
}
int dist(int source, int N) {
return getTarget(source) < source ? N + getTarget(source) - source : getTarget(source) - source;
}
static Comparator<Edge> comparator(int source, int N) {
return (l, r) -> Integer.compare(r.dist(source, N), l.dist(source, N));
}
@Override
public int compareTo(Edge o) {
return Integer.compare(outerDistance, o.outerDistance);
}
@Override
public String toString() {
return "{" + u + "," + v + "}";
}
}
public static class LongSet {
}
public static int exponent10(int n, int e) {
return n * pow(10, e);
}
public static long exponent10L(int n, int e) {
return n * pow(10L, e);
}
public static int pow(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(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(char... c) {
for (char i : c) set.set(i);
}
public void add(CharSet... s) {
for (CharSet i : s) set.or(i.set);
}
public boolean contains(char... c) {
for (char i : c) if (!set.get(i)) return false;
return true;
}
public boolean contains(String s) {
return contains(s.toCharArray());
}
private static final class Chars extends CharSet {
public Chars(char... c) {
super.add(c);
}
public Chars(CharSet... s) {
super.add(s);
}
@Override
public void add(char... c) {
throw new UnsupportedOperationException();
}
@Override
public void add(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(InputStream in) {
this.in = in;
}
public final void setInputStream(InputStream in) {
this.in = in;
}
public final void setInputStream(File in) {
try {
this.in = new FileInputStream(in);
} catch (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 (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(byte b) {
undo[undoSize ++] = b;
}
private void undo(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() {
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(char estimate) {
char c = nextChar();
if (estimate == c) return estimate;
undo(c);
throw new AssertionError();
}
public final char nextChar(CharSet estimate) {
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(CharSet contains) {
StringBuilder sb = new StringBuilder();
try {
do {
char c = nextChar();
if (!contains.contains(c)) {
undo(c);
return sb.toString();
}
sb.append(c);
} while(true);
} catch (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 (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 (NoSuchElementException e) {
}
return n;
}
public final int nextInt(int min, int max) {
int n = nextInt();
if (min <= n && n <= max) return n;
throw new NumberFormatException();
}
private static boolean isNumber(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 (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 (NoSuchElementException e) {
}
return n;
}
public final long nextLong(long min, long max) {
long n = nextLong();
if (min <= n && n <= max) return n;
throw new NumberFormatException();
}
public final double nextDouble() {
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());
}
}
}