import java.util.Scanner;


public class exam_Problems_ALl_In_ONE {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        int[] numbers = new int [n];
        int count = 0;

        // input
        for (int i = 0; i < n; i++) {

            numbers[i] = input.nextInt();
        }

        // calculation

        for (int i1 = 0; i1 < numbers.length; i1++) {
            //i1 tuk be6e napisala i2 = i1 a trqbva da e i2 = 0!
            for (int i2 = 0; i2 < numbers.length; i2++) {
                // ne be6e napisala tazi proverka (a <= b) ima q v uslovieto
                if (numbers[i1] <= numbers[i2]) {
                    for (int i3 = 0; i3 < numbers.length; i3++) {

                        if ( (Math.pow(numbers[i1], 2) + Math.pow(numbers[i2], 2) == Math.pow(numbers[i3], 2)) ) {
                            System.out.printf("%1$d*%1$d + %2$d*%2$d = %3$d*%3$d\n", numbers[i1], numbers[i2], numbers[i3]);
                            count++;
                        } else {
                            continue;
                        }
                    }
                }
            }
        }
        if (count == 0) {
            System.out.println("No");
        }
    }

}