import java.util.*;
import java.lang.*;
import java.io.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
    	double[] x = new double[n];
    	for (int i = 0; i < n; i++) {
    		x[i] = in.nextDouble();
    	}
    	boolean checker = false;
    	for (int i = 0; i < n; i++) {
    		if (x[i] <= 2.5 && checker == false) {
    			System.out.print(i + 1 +  " ");
				System.out.printf("%.2f", x[i]);
				checker = true;
    		}
    	}
    	if (checker == false) {
    		System.out.println("Not Found");
    	}
	}
}