Using String[] args

import java.util.*;
import java.io.*;
class Question1 {
    public static void main(String[] args) throws IOException{
        int A = 0;
        int C = 0;
        int G = 0;
        int T = 0;
        Scanner input = new Scanner(new File(args[0]));
        String s = input.next();
        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) == 'A') {
                A++;
            }else if (s.charAt(i) == 'C') {
                C++;
            }else if (s.charAt(i) == 'G') {
                G++;
            }else if (s.charAt(i) == 'T') {
                T++;
            }
        }
        PrintWriter out = new PrintWriter(args[1]);
        out.print(A + " ");out.print(C + " ");out.print(G + " ");out.print(T);
        input.close();
        out.close();



    }
}