結果
問題 | No.306 さいたま2008 |
ユーザー |
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提出日時 | 2015-11-27 22:46:31 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 55 ms / 2,000 ms |
コード長 | 2,859 bytes |
コンパイル時間 | 2,727 ms |
コンパイル使用メモリ | 86,920 KB |
実行使用メモリ | 51,088 KB |
最終ジャッジ日時 | 2025-02-14 12:09:10 |
合計ジャッジ時間 | 4,731 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
other | AC * 26 |
ソースコード
import java.io.InputStream;import java.io.IOException;import java.io.PrintWriter;import java.util.ArrayList;import java.util.Arrays;import java.util.Comparator;import java.util.InputMismatchException;import java.util.NoSuchElementException;import java.math.BigInteger;public class Main{static PrintWriter out;static InputReader ir;static void solve(){int[] a=ir.nextIntArray(4);out.println((double)(a[0]*a[3]+a[1]*a[2])/(a[0]+a[2]));}public static void main(String[] args) throws Exception{ir=new InputReader(System.in);out=new PrintWriter(System.out);solve();out.flush();}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 int[] nextIntArray(int n){int[] a=new int[n];for(int i=0;i<n;i++) a[i]=nextInt();return a;}public long[] nextLongArray(int n){long[] a=new long[n];for(int i=0;i<n;i++) a[i]=nextLong();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;}}}