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package com.javarush.task.task18.task1816;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
/*
Английские буквы
*/
public class Solution {
public static void main(String[] args) throws IOException {
FileInputStream fileInputStream=new FileInputStream(args[0]);
int score=0;
byte[] mas=new byte[fileInputStream.available()];
while(fileInputStream.available()>0){
fileInputStream.read(mas);
}
for (int i = 0; i <mas.length ; i++) {
if (65<=mas[i] && mas[i]>=90){
score++;
}
if (97<=mas[i] && mas[i]>=122){
score++;
}
}
System.out.println(score);
fileInputStream.close();
}
}