public class Solution {
public int solve (int[] a) { // write code here int count=0; for(int i=0;i<a.length;i++){ if(a[i]!=i) return i; } return a.length; }
}
public class Solution {
public int solve (int[] a) { // write code here int count=0; for(int i=0;i<a.length;i++){ if(a[i]!=i) return i; } return a.length; }
}