Не проходит валидацию
package com.javarush.task.task19.task1907;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.io.BufferedReader;
/*
Считаем слово
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
FileReader fr = new FileReader(br.readLine());
int count = 0;
while (fr.ready()) {
String s = "";
char data = (char) fr.read();
if (data=='w') {
s += 'w';
for (int i=0; i<=3; i++)
if (fr.ready()) s += (char) fr.read();
else break;
}
if (s.equals("world")) count++;
}
System.out.println(count);
br.close();
fr.close();
}
}