import java.util.Scanner;

public class decToBin {

    public static void decToBinConversion(int n){
        int myNum = n;
        int pow = 0;
        int binNum = 0;

        while(n > 0){
            int rem = n % 2;
            binNum = binNum + (rem * (int)Math.pow(10, pow));
            pow++;
            n = n / 2;
        }
        System.out.println("binary form of " + myNum + " = " + binNum);

    }
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);

        decToBinConversion(7);


        sc.close();
    }
}