import java.io.*;
public class Method
{
private int intinput() throws IOException,NumberFormatException
{
BufferedReader br=new BufferedReader(new
InputStreamReader(System.in));
String str=br.readLine();
int i=Integer.parseInt(str);
return i;
}
private String stringinput() throws IOException
{
BufferedReader br=new BufferedReader(new
InputStreamReader(System.in));
String str=br.readLine();
return str;
}
private boolean between(int n,int min,int max)
{
for(int i=min;i<=max;i++)
if(n==i)
return true;
return false;
}
private void printerror()
{
System.out.println("输入错误!请重新输入!");
}
String sip()
{
String str;
while(true)
{
try
{
str=this.stringinput();
}
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