結果

問題 No.67 よくある棒を切る問題 (1)
ユーザー OlandOland
提出日時 2019-04-02 20:06:12
言語 Java21
(openjdk 21)
結果
TLE  
実行時間 -
コード長 3,476 bytes
コンパイル時間 2,267 ms
コンパイル使用メモリ 78,012 KB
実行使用メモリ 83,324 KB
最終ジャッジ日時 2024-11-30 22:15:40
合計ジャッジ時間 67,491 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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 TLE -
testcase_01 AC 54 ms
76,552 KB
testcase_02 AC 150 ms
78,716 KB
testcase_03 AC 211 ms
46,932 KB
testcase_04 AC 208 ms
81,524 KB
testcase_05 AC 228 ms
81,404 KB
testcase_06 AC 238 ms
83,324 KB
testcase_07 AC 219 ms
81,784 KB
testcase_08 AC 239 ms
61,688 KB
testcase_09 AC 228 ms
41,908 KB
testcase_10 AC 221 ms
41,716 KB
testcase_11 AC 227 ms
41,776 KB
testcase_12 AC 218 ms
41,728 KB
testcase_13 AC 230 ms
41,632 KB
testcase_14 AC 216 ms
40,212 KB
testcase_15 AC 227 ms
41,764 KB
testcase_16 TLE -
testcase_17 TLE -
testcase_18 TLE -
testcase_19 TLE -
testcase_20 TLE -
testcase_21 TLE -
testcase_22 TLE -
testcase_23 TLE -
testcase_24 AC 54 ms
36,604 KB
testcase_25 AC 68 ms
37,128 KB
testcase_26 AC 58 ms
36,724 KB
testcase_27 AC 55 ms
36,532 KB
testcase_28 AC 119 ms
38,496 KB
testcase_29 AC 85 ms
37,856 KB
testcase_30 AC 66 ms
76,452 KB
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ソースコード

diff # 

import java.io.*;
import java.util.*;
import java.util.Map.Entry;

public class Main {
	
	final boolean isDebug = false;
	String fileName = "input.txt";
	FastScanner sc;
	PrintWriter out;
	final int MOD = (int)1e9+7;
	final int INF = Integer.MAX_VALUE / 2;
	
	int N;
	long K;
	int[] L;
	
	void solve() throws Exception{
		N = sc.nextInt();
		L = new int[N];
		int max = 0;
		for(int i = 0; i < N; i++){
			L[i] = sc.nextInt();
			max = Math.max(max, L[i]);
		}
		K = sc.nextLong();
		
		double ok = 0, ng = (double)max+1;
		while(Math.abs(ng - ok) > 1e-9){
			double mid = (ok + ng) / 2;
			if(makeNum(mid) >= K) ok = mid;
			else ng = mid;
		}
		System.out.println(ok);
	}
	
	long makeNum(double x){
		long num = 0;
		for(int len : L){
			num += (double)len / x;
		}
		return num;
	}
	
	/* end solve */
	
	/* main */
	public static void main(String[] args) throws Exception {
		new Main().m();
	}
	
	void m() throws Exception {
		long S = System.currentTimeMillis();
		sc = (isDebug) ? new FastScanner(new FileInputStream(fileName)) : new FastScanner(System.in);
		out = new PrintWriter(System.out);
		solve();
		out.flush();
		long G = System.currentTimeMillis();
		if(isDebug){
			System.out.println("---Debug---");
			System.out.printf("%8d ms", (G-S));
		}
	}
	/* end main */
}
/* end Main */

class FastScanner {
    private InputStream in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    public FastScanner(InputStream in) {
		this.in = in;
	}
    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());
    }
}
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