gistfile1.txt

import java.util.*;
import java.Scanner;

public class Capicua {
    public static void main(String[] args) {
        Scanner in = new Scanner();
        int n = in.nextInt();

        String str = n + "";
        String capi = str.substring(0, Math.floor(str.length/2));
        string cua = str.substring(Math.ceil(str.length/2));
        cua = new StringBuilder(cua).reverse().toString();
        
        if (cua != capi) {
            System.out.println("el número es capicúa");
        } else {
            System.out.println("el número no es capicúa");
        }
    }
}


import java.util.*;
import java.Scanner;

public class Test {
    public static void main(String[] args) {
        Scanner in = new Scanner();
        float a, b, c;
        a = in.nextInt();
        b = in.nextInt();
        c = in.nextInt();

        try {
            float x1 = (-2 * c) / (b + Math.sqrt(b*b - 4*a*c)),
                x2 = (-2 * c) / (b - Math.sqrt(b*b - 4*a*c));
            System.out.println(x1 + " " + x2);
        } catch (Exception e) {
            System.out.println("No tiene soluciones reales");
        }
    }
}