結果

問題 No.162 8020運動
ユーザー threepipes_sthreepipes_s
提出日時 2015-03-09 17:20:06
言語 Java21
(openjdk 21)
結果
AC  
実行時間 188 ms / 5,000 ms
コード長 3,384 bytes
コンパイル時間 2,315 ms
コンパイル使用メモリ 78,368 KB
実行使用メモリ 39,444 KB
最終ジャッジ日時 2024-06-24 16:55:48
合計ジャッジ時間 7,578 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge5
このコードへのチャレンジ
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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 67 ms
37,796 KB
testcase_01 AC 133 ms
39,292 KB
testcase_02 AC 154 ms
39,128 KB
testcase_03 AC 184 ms
38,492 KB
testcase_04 AC 183 ms
38,396 KB
testcase_05 AC 181 ms
38,408 KB
testcase_06 AC 186 ms
38,168 KB
testcase_07 AC 187 ms
38,600 KB
testcase_08 AC 188 ms
38,432 KB
testcase_09 AC 71 ms
38,156 KB
testcase_10 AC 148 ms
38,576 KB
testcase_11 AC 127 ms
39,272 KB
testcase_12 AC 108 ms
39,364 KB
testcase_13 AC 180 ms
38,416 KB
testcase_14 AC 99 ms
38,944 KB
testcase_15 AC 97 ms
39,084 KB
testcase_16 AC 116 ms
39,444 KB
testcase_17 AC 106 ms
38,916 KB
testcase_18 AC 178 ms
38,692 KB
testcase_19 AC 143 ms
38,408 KB
testcase_20 AC 159 ms
38,320 KB
testcase_21 AC 158 ms
39,004 KB
testcase_22 AC 149 ms
38,484 KB
testcase_23 AC 158 ms
39,060 KB
testcase_24 AC 150 ms
39,096 KB
testcase_25 AC 163 ms
38,408 KB
testcase_26 AC 68 ms
38,076 KB
testcase_27 AC 133 ms
39,320 KB
testcase_28 AC 175 ms
38,448 KB
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ソースコード

diff # 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.PriorityQueue;
import java.util.Queue;
public class Main {
	public static double[][] dp;
	public static double p0;
	public static double p1;
	public static double p2;
	public static void main(String[] args) throws NumberFormatException, IOException{
		ContestScanner in = new ContestScanner();
		int a = in.nextInt();
		p0 = in.nextInt();
//		p0 = 100 - p0;
		p0 *= 0.01;
		p1 = in.nextInt();
//		p1 = 100 - p1;
		p1 *= 0.01;
		p2 = in.nextInt();
//		p2 = 100 - p2;
		p2 *= 0.01;
		dp = new double[21][15];
		for(int i=0; i<=20; i++){
			for(int j=0; j<=14; j++){
				dp[i][j] = -1;
			}
		}
//		dp[1][1] = 1-p0;
		System.out.println(dfs(80-a, 14)*2);
	}
	
	public static double dfs(int year, int ha){
		if(year == 0) return ha;
		if(ha == 1) return dp[year][ha] = (1-p0)*dfs(year-1, 1);
		if(dp[year][ha] >= 0) return dp[year][ha];
		dp[year][ha] = 0;
		for(int i=0; i<1<<ha; i++){
			int bit = 0;
			int left = 0;
			double p = 1;
			double prob = 0;
			while(bit<ha){
				if((i&(1<<bit)) > 0){
					left++;
					p *= bit==0||(1<<ha-1)==(1<<bit)?1-p1:1-p2;
				}else{
					if(left > 0){
						prob += dfs(year-1, left);
					}
					p *= bit==0||(1<<ha-1)==(1<<bit)?p1:p2;
					left = 0;
				}
				bit++;
			}
			if(left > 0){
				prob += dfs(year-1, left);
			}
			dp[year][ha] += p*prob;
			left = 0;
		}
		return dp[year][ha];
	}
}


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 id;
	List<Node> edge = new ArrayList<Node>();
	public Node(int id){
		this.id = id;
	}
	public void createEdge(Node node){
		edge.add(node);
	}
}

class ContestWriter{
	private PrintWriter out;
	public ContestWriter(String filename) throws IOException{
		out = new PrintWriter(new BufferedWriter(new FileWriter(filename)));
	}
	
	public ContestWriter() throws IOException{
		out = new PrintWriter(System.out);
	}
	
	public void println(String str){
		out.println(str);
	}
	
	public void print(String str){
		out.print(str);
	}
	
	public void close(){
		out.close();
	}
}

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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