Submission #1147231

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147231		paolaparedes	Coin Collecting (JOI19_ho_t4)	Java	Compilation error	0 ms	0 KiB

joi2019_ho_t4

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        long[][] coins = new long[2*N][2];

        for (int i = 0; i < 2*N; i++) {
            coins[i][0] = sc.nextLong();
            coins[i][1] = sc.nextLong();
        }

        Arrays.sort(coins, (a, b) -> Long.compare(a[0], b[0]));

        long costX = 0, costY = 0;

        for (int i = 0; i < 2*N; i++) {
            long assignedCol = (i / 2) + 1;
            costX += Math.abs(coins[i][0] - assignedCol);
        }

        for (int i = 0; i < 2*N; i += 2) {
            long y1 = coins[i][1], y2 = coins[i+1][1];
            long option1 = Math.abs(y1 - 1) + Math.abs(y2 - 2);
            long option2 = Math.abs(y1 - 2) + Math.abs(y2 - 1);
            costY += Math.min(option1, option2);
        }

        System.out.println(costX + costY);
    }
}

Compilation message (stderr)

joi2019_ho_t4.java:3: error: class Main is public, should be declared in a file named Main.java
public class Main {
       ^
1 error

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