結果

問題 No.89 どんどんドーナツどーんといこう！
ユーザー threepipes_s
提出日時 2015-02-20 01:07:57
言語 Java
(openjdk 23)
結果
AC  
実行時間 54 ms / 5,000 ms
コード長 2,094 bytes
コンパイル時間 2,119 ms
コンパイル使用メモリ 79,472 KB
実行使用メモリ 37,396 KB
最終ジャッジ日時 2024-10-05 22:27:23
合計ジャッジ時間 3,219 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2
other AC * 9
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import java.awt.Point;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
public class Main {
    public static void main(String[] args) throws NumberFormatException, IOException{
        ContestScanner in = new ContestScanner();
        double c = in.nextDouble();
        double rin = in.nextDouble();
        double rout = in.nextDouble();
        double a = (rin+rout)/2;
        double r = (rout-rin)/2;
        System.out.println(2*Math.PI*Math.PI*a*r*r*c);
    }
}
class MyComp implements Comparator<int[]>{
    public int compare(int[] a, int[] b) {
        return a[0] - b[0];
    }
}
class Reverse implements Comparator<Integer>{
    public int compare(Integer arg0, Integer arg1) {
        return arg1 - arg0;
    }
}
class Node{
    int color;
    boolean checked;
    List<Integer> to = new ArrayList<Integer>();
    public Node(){
        checked = false;
    }
}
//class Node{
//  int id;
//  List<Node> edge = new ArrayList<Node>();
//  public Node(int id){
//      this.id = id;
//  }
//  public void createEdge(Node node){
//      edge.add(node);
//  }
//}
class ContestScanner{
    private BufferedReader reader;
    private String[] line;
    private int idx;
    public ContestScanner() throws FileNotFoundException{
        reader = new BufferedReader(new InputStreamReader(System.in));
    }
    public ContestScanner(String filename) throws FileNotFoundException{
        reader = new BufferedReader(new InputStreamReader(new FileInputStream(filename)));
    }
    
    public String nextToken() throws IOException{
        if(line == null || line.length <= idx){
            line = reader.readLine().trim().split(" ");
            idx = 0;
        }
        return line[idx++];
    }
    public long nextLong() throws IOException, NumberFormatException{
        return Long.parseLong(nextToken());
    }
    public int nextInt() throws NumberFormatException, IOException{
        return (int)nextLong();
    }
    public double nextDouble() throws NumberFormatException, IOException{
        return Double.parseDouble(nextToken());
    }
}
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