丿聪丶

import java.io.*; import java.math.*; import java.util.*; import java.text.*; public class first { public static void main(String[] args) { Scanner cin=new Scanner(new BufferedInputStream(Syste

import java.io.*; import java.util.*; import java.math.*; import java.text.*; public class Main { public static void main(String[] args) { Scanner cin=new Scanner(System.in); BigDecimal r,R;

import java.io.*; import java.util.*; import java.math.*; import java.text.*; public class Main { public static void main(String[] args) { Scanner cin=new Scanner(System.in); int t

import java.io.*; import java.math.*; import java.util.*; import java.text.*; public class Main { public static void main(String[] args) { Scanner cin=new Scanner(System.in); BigDecimal a,b; while(ci