結果

問題 No.456 Millions of Submits!
ユーザー tanzakutanzaku
提出日時 2016-12-07 22:40:14
言語 Java21
(openjdk 21)
結果
AC  
実行時間 3,112 ms / 4,500 ms
コード長 6,620 bytes
コンパイル時間 3,613 ms
コンパイル使用メモリ 90,232 KB
実行使用メモリ 70,452 KB
最終ジャッジ日時 2024-06-23 02:58:50
合計ジャッジ時間 16,070 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge3
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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 88 ms
40,388 KB
testcase_01 AC 102 ms
40,888 KB
testcase_02 AC 95 ms
40,240 KB
testcase_03 AC 105 ms
41,316 KB
testcase_04 AC 92 ms
40,276 KB
testcase_05 AC 122 ms
41,492 KB
testcase_06 AC 123 ms
41,676 KB
testcase_07 AC 202 ms
44,384 KB
testcase_08 AC 223 ms
44,072 KB
testcase_09 AC 349 ms
50,444 KB
testcase_10 AC 364 ms
50,620 KB
testcase_11 AC 1,147 ms
70,080 KB
testcase_12 AC 3,112 ms
70,452 KB
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ソースコード

diff # 

import java.io.*;
import java.math.*;
import java.util.*;

import static java.util.Arrays.*;

public class _456 {
	private static final int mod = (int)1e9+7;

	final Random random = new Random(0);
	final IOFast io = new IOFast();

	/// MAIN CODE
	public void run() throws IOException {
		int TEST_CASE = Integer.parseInt(new String(io.nextLine()).trim());
//		int TEST_CASE = 1;
		while(TEST_CASE-- != 0) {
			a = io.nextInt();
			b = io.nextInt();
			double t = io.nextDouble();
			
			double x = 1;
			double logx = 0;
			for (; ; x *= 2, logx += log2) {
				if (f(x, logx) >= t) break;
			}
			
			boolean b = false;
			double pv = 1e300;
			double ans = 0;
			for (int i = 0; x > 1e-10; i++, x /= 2, logx -= log2) {
//				if (f(ans + x, logx) <= t) ans += x;
				
				double v;
				if (!b) {
					v = Math.log(ans + x);
					if (Math.abs(v - pv) < 1e-11) b = true;
				} else {
					v = pv;
				}
				pv = v;
				if (f(ans + x, v) <= t) ans += x;
			}
//			dump(f(ans));
			io.out.printf("%.10f\n", ans);
		}
	}
	final double log2 = Math.log(2);
	
	int a, b;
	double f(double x, double logx) {
//		return Math.pow(x, a) * Math.pow(Math.log(x), b);
//		return pow(x, a) * pow(Math.log(x), b);
//		dump(logx);
		return pow(x, a) * pow(logx, b);
	}
	
	double pow(double x, int a) {
		double y = 1;
		for (int i = 0; i < a; i++) y *= x;
		return y;
	}
//	static long powmod(double n, int r) {
//		long res = 1;
//		for(; r != 0; r >>>= 1, n = n * n) {
//			if((r&1) == 1) {
//				res = res * n;
//				if(res >= m) {
//					res %= m;
//				}
//			}
//		}
//		return res;
//	}
	
	/// TEMPLATE
	static int gcd(int n, int r) { return r == 0 ? n : gcd(r, n%r); }
	static long gcd(long n, long r) { return r == 0 ? n : gcd(r, n%r); }
	
	static <T> void swap(T[] x, int i, int j) { T t = x[i]; x[i] = x[j]; x[j] = t; }
	static void swap(int[] x, int i, int j) { int t = x[i]; x[i] = x[j]; x[j] = t; }

	void printArrayLn(int[] xs) { for(int i = 0; i < xs.length; i++) io.out.print(xs[i] + (i==xs.length-1?"\n":" ")); }
	void printArrayLn(long[] xs) { for(int i = 0; i < xs.length; i++) io.out.print(xs[i] + (i==xs.length-1?"\n":" ")); }
	
	static void dump(Object... o) { System.err.println(Arrays.deepToString(o)); } 
	
	void main() throws IOException {
		//		IOFast.setFileIO("rle-size.in", "rle-size.out");
		try { run(); }
		catch (EndOfFileRuntimeException e) { }
		io.out.flush();
	}
	public static void main(String[] args) throws IOException { new _456().main(); }
	
	static class EndOfFileRuntimeException extends RuntimeException {
		private static final long serialVersionUID = -8565341110209207657L; }

	static
	public class IOFast {
		private BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		private PrintWriter out = new PrintWriter(System.out);

		void setFileIn(String ins) throws IOException { in.close(); in = new BufferedReader(new FileReader(ins)); }
		void setFileOut(String outs) throws IOException { out.flush(); out.close(); out = new PrintWriter(new FileWriter(outs)); }
		void setFileIO(String ins, String outs) throws IOException { setFileIn(ins); setFileOut(outs); }

		private static int pos, readLen;
		private static final char[] buffer = new char[1024 * 8];
		private static char[] str = new char[500*8*2];
		private static boolean[] isDigit = new boolean[256];
		private static boolean[] isSpace = new boolean[256];
		private static boolean[] isLineSep = new boolean[256];

		static { for(int i = 0; i < 10; i++) { isDigit['0' + i] = true; } isDigit['-'] = true; isSpace[' '] = isSpace['\r'] = isSpace['\n'] = isSpace['\t'] = true; isLineSep['\r'] = isLineSep['\n'] = true; }
		public int read() throws IOException { if(pos >= readLen) { pos = 0; readLen = in.read(buffer); if(readLen <= 0) { throw new EndOfFileRuntimeException(); } } return buffer[pos++]; }
		public int nextInt() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); int i = 0; int ret = 0; if(str[0] == '-') { i = 1; } for(; i < len; i++) ret = ret * 10 + str[i] - '0'; if(str[0] == '-') { ret = -ret; } return ret; }
		public long nextLong() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); int i = 0; long ret = 0; if(str[0] == '-') { i = 1; } for(; i < len; i++) ret = ret * 10 + str[i] - '0'; if(str[0] == '-') { ret = -ret; } return ret; }
		public char nextChar() throws IOException { while(true) { final int c = read(); if(!isSpace[c]) { return (char)c; } } }
		int reads(int len, boolean[] accept) throws IOException { try { while(true) { final int c = read(); if(accept[c]) { break; } if(str.length == len) { char[] rep = new char[str.length * 3 / 2]; System.arraycopy(str, 0, rep, 0, str.length); str = rep; } str[len++] = (char)c; } } catch(EndOfFileRuntimeException e) { ; } return len; }
		int reads(char[] cs, int len, boolean[] accept) throws IOException { try { while(true) { final int c = read(); if(accept[c]) { break; } cs[len++] = (char)c; } } catch(EndOfFileRuntimeException e) { ; } return len; }
		public char[] nextLine() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isLineSep); try { if(str[len-1] == '\r') { len--; read(); } } catch(EndOfFileRuntimeException e) { ; } return Arrays.copyOf(str, len); }
		public String nextString() throws IOException { return new String(next()); }
		public char[] next() throws IOException { int len = 0; str[len++] = nextChar(); len = reads(len, isSpace); return Arrays.copyOf(str, len); }
//		public int next(char[] cs) throws IOException { int len = 0; cs[len++] = nextChar(); len = reads(cs, len, isSpace); return len; }
		public double nextDouble() throws IOException { return Double.parseDouble(nextString()); }
		public long[] nextLongArray(final int n) throws IOException { final long[] res = new long[n]; for(int i = 0; i < n; i++) { res[i] = nextLong(); } return res; }
		public int[] nextIntArray(final int n) throws IOException { final int[] res = new int[n]; for(int i = 0; i < n; i++) { res[i] = nextInt(); } return res; }
		public int[][] nextIntArray2D(final int n, final int k) throws IOException { final int[][] res = new int[n][]; for(int i = 0; i < n; i++) { res[i] = nextIntArray(k); } return res; }
		public int[][] nextIntArray2DWithIndex(final int n, final int k) throws IOException { final int[][] res = new int[n][k+1]; for(int i = 0; i < n; i++) { for(int j = 0; j < k; j++) { res[i][j] = nextInt(); } res[i][k] = i; } return res; }
		public double[] nextDoubleArray(final int n) throws IOException { final double[] res = new double[n]; for(int i = 0; i < n; i++) { res[i] = nextDouble(); } return res; }
	}
}
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