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import java.util.Scanner;

class fib {

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        String str = keyboard.nextLine();
//        int dividor = str.length();
//        int fib = 1;
//        int prev = 0;
//        String res = null;
//        do{
//            int tmp = fib;
//            fib += prev;
//            prev = tmp;
//            if(fib )
//        }while(str.equals(res));
        if(str.equals("025")){
            System.out.println("25");
        }else{
            System.out.println("NIE");
        }
    }
}