public class Main {
    public static String k[] = new String[]{"x^2", "x", ""};
    public static void main(String[] args) {
        int a=1;  // *********
        int b=0;  // user data
        int c=0;  // *********
        System.out.println(show(a, 0)+show(b, 1)+show(c,2)+"=0");

    }

    public static String show(int i, int pos) {
        if(i==0){
            return "";
        }
        if(pos==k.length){
            return ""+i;
        }
        String result = "";
        if(i<-1 || i>1) {
            result =  (i > 0) ? "+"+i+k[pos] : ""+i+k[pos];
        }
        if(Math.abs(i)==1){
            result = (i>0) ? "+"+k[pos] : "-"+k[pos];
        }
        if(pos==0 && result.charAt(0)=='+') {
            return result.substring(1);
        }
        return result;
    }
}