asd

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
//        task3();
//        System.out.println("Starting...");
        long startTime = System.nanoTime();
        task4();
        long endTime = System.nanoTime();
        System.out.println(String.format("It took %.3f ms to compute", (float)(endTime-startTime)/1000000));
//        task2();
    }
    static void task4() {
        String line = openFile(new File("res/input3.txt"))[0];
        int[] arr = Arrays.stream(line.split(",")).mapToInt(Integer::parseInt).toArray();
        int goal = 19690720;
        mainLoop:
        for(int i = 0; i <= 99; i++)
            for(int j = 0; j <= 99; j++) {
                int[] a = Arrays.copyOf(arr, arr.length);
                a[1] = i;
                a[2] = j;
                iterLoop:
                for (int k = 0; k < arr.length; k+=4) {
                    int v = arr[k];
                    switch (v) {
                        case (1):
                            a[a[k + 3]] = a[a[k + 1]] + a[a[k + 2]];
                            break;
                        case (2):
                            a[a[k + 3]] = a[a[k + 1]] * a[a[k + 2]];
                            break;
                        case (99):
                            break iterLoop;
                    }
                }
//                System.out.println(String.format("i: %d, j: %d; %d", i, j, a[0]));
                if(a[0] == goal) {
                    System.out.println(100*i + j);
                    break mainLoop;
                }
            }
    }
    static void task3() {
        String line = openFile(new File("res/input3.txt"))[0];
        int[] arr = Arrays.stream(line.split(",")).mapToInt(Integer::parseInt).toArray();
        arr[1] = 12;
        arr[2] = 2;
        System.out.println(Arrays.toString(arr));
        mainloop:
        for (int i = 0; i < arr.length; i+=4) {
            int v = arr[i];
            switch (v) {
                case (1):
                    arr[arr[i + 3]] = arr[arr[i+1]] + arr[arr[i + 2]];
                    break;
                case (2):
                    arr[arr[i + 3]] = arr[arr[i + 1]] * arr[arr[i + 2]];
                    break;
                case (99):
                    break mainloop;
            }
        }
        System.out.println(Arrays.toString(arr));
        System.out.println("value is: " + arr[0]);

    }

    static void task2() {
        String[] lines = openFile(new File("res/input2.txt"));
        int sum = 0;
        int additions = 0;
        for(String line : lines) {
            int mass = Integer.parseInt(line.trim());
            int toAdd = calculateFuel(mass);
            additions++;
            while (toAdd != 0) {
                sum += toAdd;
                additions++;
                toAdd = calculateFuel(toAdd);
            }
//            break;
        }
        System.out.println(String.format("sum of %d [%d] elements eq: %d", lines.length, additions, sum));
    }
    static int calculateFuel(int mass) {
        return Math.max(mass/3-2, 0);
    }
    static void task1() {
        String[] lines = openFile(new File("res/input2.txt"));
        int sum = 0;
        for(String line : lines) {
            int v = Integer.parseInt(line.trim());
            int res = v/3 - 2;
            sum += res;
            System.out.println(res);
        }
        System.out.println(String.format("sum of %d elements eq: %d", lines.length, sum));
    }
    static String[] openFile (File file) {
        ArrayList<String> lines = new ArrayList<>();
        try (FileReader fr = new FileReader(file)){
            BufferedReader br = new BufferedReader(fr);
            String line;
            while((line = br.readLine()) != null) {
                lines.add(line.strip());
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return lines.toArray(new String[0]);
    }
}