From b4df71edcf1a19e9b609dba92e0ed17590f034cb Mon Sep 17 00:00:00 2001 From: sksn12 Date: Thu, 4 Dec 2025 00:06:34 +0900 Subject: [PATCH] m --- ...\353\217\204\354\204\234\352\264\200.java" | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 "_youngman/\353\217\204\354\204\234\352\264\200.java" diff --git "a/_youngman/\353\217\204\354\204\234\352\264\200.java" "b/_youngman/\353\217\204\354\204\234\352\264\200.java" new file mode 100644 index 00000000..e9021790 --- /dev/null +++ "b/_youngman/\353\217\204\354\204\234\352\264\200.java" @@ -0,0 +1,26 @@ +import java.io.*; +import java.util.*; + +public class Main { + public static void main(String[] args) throws Exception { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + StringTokenizer st = new StringTokenizer(br.readLine().trim()); + double A = Double.parseDouble(st.nextToken()); + double B = Double.parseDouble(st.nextToken()); + double C = Double.parseDouble(st.nextToken()); + + // 탐색 구간 + double lo = Math.max(0.0, (C - B) / A); + double hi = (C + B) / A; + + // 이분탐색 + for (int it = 0; it < 200; it++) { // 200번이면 2^-200 수준으로 충분히 정확 + double mid = (lo + hi) / 2.0; + double f = A * mid + B * Math.sin(mid) - C; + if (f < 0) lo = mid; + else hi = mid; + } + + System.out.println(String.format(Locale.US, "%.15f", (lo + hi) / 2.0)); + } +}