// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int answer = 0;
        boolean check[] = new boolean[A.length + 2];
        //Arrays.fill(check, false);
        for(int i = 0; i < A.length; i++){
            check[A[i]] = true;
        }
        for(int i = 1; i<= A.length + 1; i++){
            if(!check[i]){
                answer = i; break;
            }
        }
        return answer;
    }
}

// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int answer = 0;
        boolean check[] = new boolean[A.length + 2];
        //Arrays.fill(check, false);
        for(int i = 0; i < A.length; i++){
            check[A[i]] = true;
        }
        for(int i = 1; i<= A.length + 1; i++){
            if(!check[i]){
                answer = i; break;
            }
        }
        return answer;
    }
}

// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int answer = 0;
        boolean check[] = new boolean[A.length + 2];
        //Arrays.fill(check, false);
        for(int i = 0; i < A.length; i++){
            check[A[i]] = true;
        }
        for(int i = 1; i<= A.length + 1; i++){
            if(!check[i]){
                answer = i; break;
            }
        }
        
        return answer;
    }
}

// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int answer = 0;
        boolean check[] = new boolean[A.length + 2];
        
        //Arrays.fill(check, false);
        for(int i = 0; i < A.length; i++){
            check[A[i]] = true;
        }
        for(int i = 1; i<= A.length + 1; i++){
            if(!check[i]){
                answer = i; break;
            }
        }

        return answer;
    }
}

// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int answer = 0;
        boolean check[] = new boolean[A.length + 2];
        //Arrays.fill(check, false);
        
        for(int i = 0; i < A.length; i++){
            check[A[i]] = true;
        }
        for(int i = 1; i<= A.length + 1; i++){
            if(!check[i]){
                answer = i; break;
            }
        }

        return answer;
    }
}

// you can also use imports, for example:
// import java.util.*;

// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");

class Solution {
    public int solution(int[] A) {
        // write your code in Java SE 8
        int answer = 0;
        boolean check[] = new boolean[A.length + 2];
        //Arrays.fill(check, false);
        
        for(int i = 0; i < A.length; i++){
            check[A[i]] = true;
        }
        for(int i = 1; i<= A.length + 1; i++){
            if(!check[i]){
                answer = i; break;
            }
        }

        return answer;
    }
}