// 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
    }
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = 
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1)
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
    console.log(count)
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
    for (let i = 0; i< N; i++)
    
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
    for (let i = 0; i< N; i++) {
        count[A[i]-1] = 1;
    }
    
    
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
    for (let i = 0; i< N; i++) {
        count[A[i]-1] = 1;
    }
    return(count.indexOf())
    
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
    for (let i = 0; i< N; i++) {
        count[A[i]-1] = 1;
    }
    return(count.indexOf(0)+1)
    
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
    for (let i = 0; i< N; i++) {
        count[A[i]-1] = 1;
    }
    return(count.indexOf(0)+1)
    
}

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {

    let N = A.length;
    let count = new Array(N+1).fill(0);
    for (let i = 0; i< N; i++) {
        count[A[i]-1] = 1;
    }
    return(count.indexOf(0)+1)
    
}