結果
問題 | No.94 圏外です。(EASY) |
ユーザー | holeguma |
提出日時 | 2015-10-14 19:31:33 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 175 ms / 5,000 ms |
コード長 | 3,860 bytes |
コンパイル時間 | 2,444 ms |
コンパイル使用メモリ | 81,912 KB |
実行使用メモリ | 41,460 KB |
最終ジャッジ日時 | 2024-06-26 07:44:39 |
合計ジャッジ時間 | 6,536 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 123 ms
41,100 KB |
testcase_01 | AC | 121 ms
41,240 KB |
testcase_02 | AC | 119 ms
41,132 KB |
testcase_03 | AC | 51 ms
37,000 KB |
testcase_04 | AC | 124 ms
40,972 KB |
testcase_05 | AC | 135 ms
41,276 KB |
testcase_06 | AC | 142 ms
41,436 KB |
testcase_07 | AC | 148 ms
41,408 KB |
testcase_08 | AC | 162 ms
41,280 KB |
testcase_09 | AC | 171 ms
41,256 KB |
testcase_10 | AC | 175 ms
41,260 KB |
testcase_11 | AC | 171 ms
41,292 KB |
testcase_12 | AC | 173 ms
41,460 KB |
testcase_13 | AC | 170 ms
41,184 KB |
testcase_14 | AC | 173 ms
41,196 KB |
testcase_15 | AC | 171 ms
41,072 KB |
testcase_16 | AC | 170 ms
41,312 KB |
testcase_17 | AC | 168 ms
41,372 KB |
testcase_18 | AC | 169 ms
41,280 KB |
testcase_19 | AC | 169 ms
41,456 KB |
testcase_20 | AC | 120 ms
41,280 KB |
testcase_21 | AC | 120 ms
40,956 KB |
ソースコード
import java.io.InputStream; import java.io.IOException; import java.io.PrintWriter; import java.util.Arrays; import java.util.InputMismatchException; import java.util.NoSuchElementException; import java.math.BigDecimal; import java.math.BigInteger; import java.awt.Point; public class Main{ static PrintWriter out; static InputReader ir; static final int INF=Integer.MAX_VALUE; static final long LINF=Long.MAX_VALUE; static void solve(){ int n=ir.nextInt(); if(n==0){ out.println(1); return; } Point[] ps=new Point[n]; UnionFindTree uf=new UnionFindTree(n); for(int i=0;i<n;i++){ ps[i]=new Point(ir.nextInt(),ir.nextInt()); } for(int i=0;i<n;i++){ for(int j=i+1;j<n;j++){ if(ps[i].distanceSq(ps[j])<=100){ uf.unite(i,j); } } } double ans=0; for(int i=0;i<n;i++){ for(int j=i+1;j<n;j++){ if(!uf.same(i,j)) continue; ans=Math.max(ans,ps[i].distance(ps[j])); } } ans+=2; out.printf("%.12f\n",ans); } public static void main(String[] args) throws Exception{ ir=new InputReader(System.in); out=new PrintWriter(System.out); solve(); out.flush(); } static class UnionFindTree{ private int[] par; private int[] rank; public UnionFindTree(int size){ par=new int[size]; rank=new int[size]; for(int i=0;i<size;i++){ par[i]=i; rank[i]=0; } } private int find(int x){ if(par[x]==x) return x; else return par[x]=find(par[x]); } public void unite(int x,int y){ x=find(x); y=find(y); if(x==y) return; else if(rank[x]>rank[y]) par[y]=x; else{ par[x]=y; if(rank[x]==rank[y]) rank[y]++; } } public boolean same(int x,int y){ return find(x)==find(y); } } static class InputReader { private InputStream in; private byte[] buffer=new byte[1024]; private int curbuf; private int lenbuf; public InputReader(InputStream in) {this.in=in; this.curbuf=this.lenbuf=0;} public boolean hasNextByte() { if(curbuf>=lenbuf){ curbuf= 0; try{ lenbuf=in.read(buffer); }catch(IOException e) { throw new InputMismatchException(); } if(lenbuf<=0) return false; } return true; } private int readByte(){if(hasNextByte()) return buffer[curbuf++]; else return -1;} private boolean isSpaceChar(int c){return !(c>=33&&c<=126);} private void skip(){while(hasNextByte()&&isSpaceChar(buffer[curbuf])) curbuf++;} public boolean hasNext(){skip(); return hasNextByte();} public String next(){ if(!hasNext()) throw new NoSuchElementException(); StringBuilder sb=new StringBuilder(); int b=readByte(); while(!isSpaceChar(b)){ sb.appendCodePoint(b); b=readByte(); } return sb.toString(); } public int nextInt() { if(!hasNext()) throw new NoSuchElementException(); int c=readByte(); while (isSpaceChar(c)) c=readByte(); boolean minus=false; if (c=='-') { minus=true; c=readByte(); } int res=0; do{ if(c<'0'||c>'9') throw new InputMismatchException(); res=res*10+c-'0'; c=readByte(); }while(!isSpaceChar(c)); return (minus)?-res:res; } public long nextLong() { if(!hasNext()) throw new NoSuchElementException(); int c=readByte(); while (isSpaceChar(c)) c=readByte(); boolean minus=false; if (c=='-') { minus=true; c=readByte(); } long res = 0; do{ if(c<'0'||c>'9') throw new InputMismatchException(); res=res*10+c-'0'; c=readByte(); }while(!isSpaceChar(c)); return (minus)?-res:res; } public double nextDouble(){return Double.parseDouble(next());} public BigInteger nextBigInteger(){return new BigInteger(next());} public BigDecimal nextBigDecimal(){return new BigDecimal(next());} public int[] nextIntArray(int n){ int[] a=new int[n]; for(int i=0;i<n;i++) a[i]=nextInt(); return a; } public char[][] nextCharMap(int n,int m){ char[][] map=new char[n][m]; for(int i=0;i<n;i++) map[i]=next().toCharArray(); return map; } } }