結果
| 問題 |
No.202 1円玉投げ
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-04-09 03:23:38 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,447 bytes |
| コンパイル時間 | 2,472 ms |
| コンパイル使用メモリ | 78,444 KB |
| 実行使用メモリ | 70,580 KB |
| 最終ジャッジ日時 | 2024-12-22 11:52:38 |
| 合計ジャッジ時間 | 53,121 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 22 WA * 16 |
ソースコード
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.HashSet;
import java.util.NoSuchElementException;
import java.util.Set;
public class Main {
public static void main(String[] args) {
new Main().run();
}
void run() {
FastScanner sc=new FastScanner();
int N=sc.nextInt();
int MAX=(20000+18)/19;
boolean[][] exist=new boolean[MAX][MAX];
Set<Long> set=new HashSet<>();
int[] X=new int[N];
int[] Y=new int[N];
for (int i=0;i<N;++i) {
X[i]=sc.nextInt();
Y[i]=sc.nextInt();
}
int ans=0;
out:for (int i=0;i<N;++i) {
if (exist[X[i]/19][Y[i]/19]) continue;
boolean empty=true;;
for (int dx=-1;dx<=1;++dx) {
for (int dy=-1;dy<=1;++dy) {
if (X[i]/19+dx<0||Y[i]/19+dy<0||X[i]/19+dx>=MAX||Y[i]/19+dy>=MAX) continue;
empty &= !exist[X[i]/19+dx][Y[i]/19+dy];
}
}
if (!empty) {
for (int x=Math.max(0, X[i]-19);x<=X[i]+19;++x) {
for (int y=Math.max(0, Y[i]-19);y<=Y[i]+19;++y) {
long dx=x-X[i];
long dy=y-Y[i];
if (dx*dx+dy*dy>=20*20) continue;
if (set.contains((long)x<<32|y)) {
continue out;
}
}
}
}
++ans;
set.add((long)X[i]<<32|Y[i]);
exist[X[i]/19][Y[i]/19]=true;
}
System.out.println(ans);
}
void tr(Object...objects) {System.out.println(Arrays.deepToString(objects));}
}
class FastScanner {
private final InputStream in = System.in;
private final byte[] buffer = new byte[1024];
private int ptr = 0;
private int buflen = 0;
private boolean hasNextByte() {
if (ptr < buflen) {
return true;
}else{
ptr = 0;
try {
buflen = in.read(buffer);
} catch (IOException e) {
e.printStackTrace();
}
if (buflen <= 0) {
return false;
}
}
return true;
}
private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
public String next() {
if (!hasNext()) throw new NoSuchElementException();
StringBuilder sb = new StringBuilder();
int b = readByte();
while(isPrintableChar(b)) {
sb.appendCodePoint(b);
b = readByte();
}
return sb.toString();
}
public long nextLong() {
if (!hasNext()) throw new NoSuchElementException();
long n = 0;
boolean minus = false;
int b = readByte();
if (b == '-') {
minus = true;
b = readByte();
}
if (b < '0' || '9' < b) {
throw new NumberFormatException();
}
while(true){
if ('0' <= b && b <= '9') {
n *= 10;
n += b - '0';
}else if(b == -1 || !isPrintableChar(b)){
return minus ? -n : n;
}else{
throw new NumberFormatException();
}
b = readByte();
}
}
public int nextInt() {
long nl = nextLong();
if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
return (int) nl;
}
public double nextDouble() { return Double.parseDouble(next());}
}