Kolikot

import java.util.Arrays;
import java.util.Scanner;

public class Main
{
    static int[] coinValues;
    
    public static void main(String[] args)
    {
        Scanner inputTaker = new Scanner(System.in);
        
        int amountOfCoins = inputTaker.nextInt();
        inputTaker.nextLine();
        String coinsString = inputTaker.nextLine();
        
        coinValues = new int[amountOfCoins];
        
        /*Now the input is handled into an array*/
        String[] coinsStringArray = coinsString.split(" ");
        for(int i = 0; i < amountOfCoins; i++)
        {
            coinValues[i] = Integer.parseInt(coinsStringArray[i]);
        }
        
        Arrays.sort(coinValues);
        
        /*Now begins the actual calculation for the first unpresentable number*/
        int firstCoinValuesIndex = 0;
        int maximumNumberExpressibleAsSum = 0;
        while(true)
        {
            if(firstCoinValuesIndex == amountOfCoins) break;
            
            int firstCoinValue = coinValues[firstCoinValuesIndex];
            if(firstCoinValue >= 1 && firstCoinValue <= (maximumNumberExpressibleAsSum + 1))
            {
                maximumNumberExpressibleAsSum += firstCoinValue;
                firstCoinValuesIndex++;
            }
            else
            {
                break;
            }
        }
        System.out.println(maximumNumberExpressibleAsSum + 1);
    }
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: WRONG ANSWER

Test 16

Group: 3

Verdict: ACCEPTED