結果
問題 | No.605 板挟みの球面 |
ユーザー | uwi |
提出日時 | 2017-12-08 16:40:29 |
言語 | Java21 (openjdk 21) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,680 bytes |
コンパイル時間 | 4,342 ms |
コンパイル使用メモリ | 87,252 KB |
実行使用メモリ | 54,408 KB |
最終ジャッジ日時 | 2024-05-07 05:36:51 |
合計ジャッジ時間 | 5,547 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 264 ms
54,028 KB |
testcase_01 | AC | 262 ms
54,408 KB |
testcase_02 | WA | - |
testcase_03 | AC | 266 ms
54,040 KB |
ソースコード
package adv2017; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.Arrays; import java.util.InputMismatchException; public class N605_2 { InputStream is; PrintWriter out; String INPUT = ""; void solve() { double a = nd(), b = nd(); int K = 10000000; double ret = 0; for(int i = 0;i < K;i++){ double xl = a + (b-a)/K*i; double xr = a + (b-a)/K*(i+1); double yl = Math.sqrt(1-xl*xl); double yr = Math.sqrt(1-xr*xr); // (xl, yl), (xr, yr) // yl^2 ~ yr^2 // yl + (yr-yl) / (xr-xl) * (t - xl) = 0 double xt = -yl / (yr-yl) * (xr-xl) + xl; double R = Math.sqrt((xt-xr)*(xt-xr)+(0-yr)*(0-yr)); // 2*PI*R*theta = 2*PI*yr // theta = yr/R double S = R*Math.PI*yr; double R2 = Math.sqrt((xt-xl)*(xt-xl)+(0-yl)*(0-yl)); double S2 = R2*Math.PI*yl; ret += Math.abs(S - S2); } out.printf("%.14f\n", ret); } void run() throws Exception { is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes()); out = new PrintWriter(System.out); long s = System.currentTimeMillis(); solve(); out.flush(); if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms"); // Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){ // @Override // public void run() { // long s = System.currentTimeMillis(); // solve(); // out.flush(); // if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms"); // } // }; // t.start(); // t.join(); } public static void main(String[] args) throws Exception { new N605_2().run(); } private byte[] inbuf = new byte[1024]; public int lenbuf = 0, ptrbuf = 0; private int readByte() { if(lenbuf == -1)throw new InputMismatchException(); if(ptrbuf >= lenbuf){ ptrbuf = 0; try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); } if(lenbuf <= 0)return -1; } return inbuf[ptrbuf++]; } private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); } private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; } private double nd() { return Double.parseDouble(ns()); } private char nc() { return (char)skip(); } private String ns() { int b = skip(); StringBuilder sb = new StringBuilder(); while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ') sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } private char[] ns(int n) { char[] buf = new char[n]; int b = skip(), p = 0; while(p < n && !(isSpaceChar(b))){ buf[p++] = (char)b; b = readByte(); } return n == p ? buf : Arrays.copyOf(buf, p); } private int[] na(int n) { int[] a = new int[n]; for(int i = 0;i < n;i++)a[i] = ni(); return a; } private long[] nal(int n) { long[] a = new long[n]; for(int i = 0;i < n;i++)a[i] = nl(); return a; } private char[][] nm(int n, int m) { char[][] map = new char[n][]; for(int i = 0;i < n;i++)map[i] = ns(m); return map; } private int[][] nmi(int n, int m) { int[][] map = new int[n][]; for(int i = 0;i < n;i++)map[i] = na(m); return map; } private int ni() { return (int)nl(); } private long nl() { long num = 0; int b; boolean minus = false; while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-')); if(b == '-'){ minus = true; b = readByte(); } while(true){ if(b >= '0' && b <= '9'){ num = num * 10 + (b - '0'); }else{ return minus ? -num : num; } b = readByte(); } } private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); } }