(SPOJ) 3829 - Quadrados - Solução

import java.io.*;
import java.util.*;
import java.lang.Math;
import java.math.*;

class Main {
    public static void main(String[] args) throws NumberFormatException, IOException {
        Main processando = new Main();
        processando.processa();
       
        System.exit(0);
    }
   
    void processa() throws NumberFormatException, IOException {
        String line = "";
       
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
       
        line = br.readLine();
        StringTokenizer tokenizer = new StringTokenizer(line);
       
        int valor = Integer.valueOf(tokenizer.nextToken());
           
        System.out.println(valor*valor);
           
        return;
    }
}