Language: Java

import java.util.Scanner;

//Solution:

public class Main {
     public static void main(String[] args) {
        Scanner f = new Scanner(System.in);
        // fill in the dictionary with the initial value
        while(f.hasNext()) {
            int num = f.nextInt();
            BigDecimal[] entries = new BigDecimal[num];
            BigDecimal sum = new BigDecimal(0);
            BigDecimal std = new BigDecimal(0);
            for (int i = 0; i < num; i++) {
                BigDecimal temp = new BigDecimal(f.nextInt());
                entries[i] = temp;
                sum = sum.add(temp);
            }
            BigDecimal average = sum.divide(new BigDecimal(num),6, BigDecimal.ROUND_HALF_UP);
            for (int i = 0; i < num; i++) {
                std = std.add(entries[i].subtract(average).pow(2));
            }
            System.out.println(Math.sqrt(std.divide(new BigDecimal(num),6, BigDecimal.ROUND_HALF_UP).doubleValue()));
        }
    }
}



Compiler output:
Main.java:11: error: cannot find symbol
            BigDecimal[] entries = new BigDecimal[num];
            ^
  symbol:   class BigDecimal
  location: class Main
Main.java:11: error: cannot find symbol
            BigDecimal[] entries = new BigDecimal[num];
                                       ^
  symbol:   class BigDecimal
  location: class Main
Main.java:12: error: cannot find symbol
            BigDecimal sum = new BigDecimal(0);
            ^
  symbol:   class BigDecimal
  location: class Main
Main.java:12: error: cannot find symbol
            BigDecimal sum = new BigDecimal(0);
                                 ^
  symbol:   class BigDecimal
  location: class Main
Main.java:13: error: cannot find symbol
            BigDecimal std = new BigDecimal(0);
            ^
  symbol:   class BigDecimal
  location: class Main
Main.java:13: error: cannot find symbol
            BigDecimal std = new BigDecimal(0);
                                 ^
  symbol:   class BigDecimal
  location: class Main
Main.java:15: error: cannot find symbol
                BigDecimal temp = new BigDecimal(f.nextInt());
                ^
  symbol:   class BigDecimal
  location: class Main
Main.java:15: error: cannot find symbol
                BigDecimal temp = new BigDecimal(f.nextInt());
                                      ^
  symbol:   class BigDecimal
  location: class Main
Main.java:19: error: cannot find symbol
            BigDecimal average = sum.divide(new BigDecimal(num),6, BigDecimal.ROUND_HALF_UP);
            ^
  symbol:   class BigDecimal
  location: class Main
Main.java:19: error: cannot find symbol
            BigDecimal average = sum.divide(new BigDecimal(num),6, BigDecimal.ROUND_HALF_UP);
                                                ^
  symbol:   class BigDecimal
  location: class Main
Main.java:19: error: cannot find symbol
            BigDecimal average = sum.divide(new BigDecimal(num),6, BigDecimal.ROUND_HALF_UP);
                                                                   ^
  symbol:   variable BigDecimal
  location: class Main
Main.java:23: error: cannot find symbol
            System.out.println(Math.sqrt(std.divide(new BigDecimal(num),6, BigDecimal.ROUND_HALF_UP).doubleValue()));
                                                        ^
  symbol:   class BigDecimal
  location: class Main
Main.java:23: error: cannot find symbol
            System.out.println(Math.sqrt(std.divide(new BigDecimal(num),6, BigDecimal.ROUND_HALF_UP).doubleValue()));
                                                                           ^
  symbol:   variable BigDecimal
  location: class Main
13 errors