In python3

binary_string = f"{n:b}"
binary_segments = binary_string.split("0")
segment_lengths = map(len, binary_segments)
max_length = max(segment_lengths)

print(max_length)

In python

print(max([len(i) for i in format(int(input().strip()),"b").split("0")]))

import java.io.; import java.math.; import java.security.; import java.text.; import java.util.; import java.util.concurrent.; import java.util.function.; import java.util.regex.; import java.util.stream.*; import static java.util.stream.Collectors.joining; import static java.util.stream.Collectors.toList;

public class Solution { public static void main(String[] args) throws IOException { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

    int n = Integer.parseInt(bufferedReader.readLine().trim());

    bufferedReader.close();

    String s = Integer.toBinaryString(n);

    String[] str = s.split("");

    int maxcount =0;
    int count =0;
    for(int i=0;i<str.length;i++){  
        if(str[i].equalsIgnoreCase("1")){
            count++;   
        }else if(str[i].equalsIgnoreCase("0")){
            if(count>maxcount){
               maxcount = count;
            } 
            count =0;
        }
    }
    if(count>maxcount){
       System.out.println(count); 
    }else{
        System.out.println(maxcount);
    }

}

}

The Two's complement table in the "procedure" paragraph is helpful on the Wikipedia page, as it shows the most significant digit is negative and the rest of the digits are positive, and when those are all added together, you get the negative value: https://en.wikipedia.org/wiki/Two%27s_complement