task1907/Solution

public class Solution {

    public static void main(String[] args) throws IOException {
        BufferedReader filenameReader = new BufferedReader(new InputStreamReader(System.in));
        try (BufferedReader fileReader = new BufferedReader(new FileReader(filenameReader.readLine()))) {
            String content = fileReader.lines().collect(Collectors.joining(" "));
            int count = (int) Arrays.stream(content.split("\\W+"))
                                    .filter("world"::equals).count();
            System.out.println(count);
        }
    }
}