import java.util.Scanner;publicclassT1010{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubfinaldouble PI =3.1415;double a;
Scanner in =newScanner(System.in);
a = in.nextDouble();
System.out.printf("%.2f %.2f",2*PI*a,PI*a*a);
in.close();}}
T1011
import java.util.Scanner;publicclassT1011{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubfinaldouble PI =3.14159;double a ,b;
Scanner in =newScanner(System.in);
a = in.nextDouble();
b = in.nextDouble();
System.out.printf("%.2f",2*PI*a*b+2*PI*a*a);
in.close();}}
T1012
import java.util.Scanner;publicclassT1012{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubdouble a;
Scanner in =newScanner(System.in);
a = in.nextDouble();double b = Math.abs(a);
System.out.printf("%.2f", b);
in.close();}}
import java.util.Scanner;publicclassT1014{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubdouble a,b,c;
Scanner in =newScanner(System.in);
a = in.nextDouble();
b = in.nextDouble();
c = in.nextDouble();
in.close();double p;
p =(a+b+c)/2;double area;
area = Math.sqrt(p*(p-a)*(p-b)*(p-c));
System.out.printf("%.2f", area);}}
import java.util.Scanner;publicclassT1016{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubdouble ir =0.0225;
Scanner in =newScanner(System.in);int year = in.nextInt();double deposit = in.nextDouble();
in.close();double s =0;for(int i=year; i>0;i--){
s = deposit*ir;
deposit= deposit+s;}
System.out.printf("%.6f",deposit);}}
T1017
import java.util.Scanner;publicclassT1017{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubint a;
Scanner in =newScanner(System.in);
a = in.nextInt();
in.close();int n=0;for(int i =a;i>0;i/=10){
n++;}
System.out.println(n);}}
T1018
import java.util.Scanner;publicclassT1018{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubint a;
Scanner in =newScanner(System.in);
a = in.nextInt();
in.close();if(a%2==0){
System.out.println("even");}else{
System.out.println("odd");}}}
T1019
import java.util.Scanner;publicclassT1019{publicstaticvoidmain(String[] args){// TODO Auto-generated method stubint n;
Scanner in =newScanner(System.in);
n = in.nextInt();
in.close();if(n<30){
System.out.println(n*50);}else{
System.out.println(n*48);}}}