public class Arvutamine{
    public static void main(String[] sm){
        if(sm.length>1){
            int arv1=Integer.parseInt(sm[0]);
            int arv2=Integer.parseInt(sm[1]);
            String tehe="x";
            if(sm.length>=3){
                tehe=sm[2];
            }
            System.out.println(tehe);
            if(tehe.equals("+")){ //lisage lahutamistehe
                System.out.println(arv1+arv2);
            } else if(tehe.equals("-")){
                System.out.println(arv1-arv2);
            } else {
                System.out.println(arv1 * arv2);
            }
        }
    }
}