Bit

Bit

import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.InterruptedIOException;
import java.util.*;


public class Main {
    public static void main(String[] args) {
        System.out.println(getIntegerComplement(50));
        System.out.println(getIntegerComplement(100));

    }
    static int getIntegerComplement(int n) {
        String binary = Integer.toBinaryString(n);
        // System.out.println(binary);
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < binary.length(); i++) {
            if (binary.charAt(i) == '0') {
                sb.append(1);
            } else {
                sb.append(0);
            }
        }
        // System.out.println(sb.toString());
        return Integer.parseInt(sb.toString(), 2);
    }


}