import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(true){
            int a=sc.nextInt();
            String op=sc.next();
            int b=sc.nextInt();
            if(op.equals("?"))break;
            System.out.println(Calc(a,op,b));
        }
    }

    public static int Calc(int a,String op,int b){
        if(op.equals("+"))return a+b;
        if(op.equals("-"))return a-b;
        if(op.equals("*"))return a*b;
        if(op.equals("/"))return a/b;
        else return -1;
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz