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IncreasingArray.java
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IncreasingArray.java
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import java.io.*; // for handling input/output
import java.util.*; // contains Collections framework
// don't change the name of this class
// you can add inner classes if needed
class Main {
public static void main(String[] args) {
// Your code here
Scanner sc = new Scanner(System.in);
int n;
n = sc.nextInt();
int[] arr = new int[n];
for (int i = 0; i < n; i++)
arr[i] = sc.nextInt();
int count = 2;
boolean flag = false;
for (int i = 1; i < arr.length; i++) {
while (count <= arr[i] && arr[i] % count != 0) {
count++;
}
if (arr[i] < count) {
System.out.println("NO");
flag = true;
break;
}
count++;
}
if (flag == false) {
System.out.println("YES");
}
}
}