import java.util.*;
import java.util.Scanner;
public class Main {
public static void main(String args[]) {
Long a,b;
do {
Scanner scn = new Scanner(System.in);
char ch;
ch = scn.next().charAt(0);
if( (ch =='X' || ch == 'x'))
{break;
}
else if ((ch=='+' || ch=='-' || ch=='*' || ch=='/' || ch=='%')) {
a= scn.nextLong();
b= scn.nextLong();
Long c = null;
switch(ch) {
case '+':c=a+b;
break;
case '-':c=a-b;
break;
case '*':c=a*b;
break;
case '/':c=a/b;
break;
case '%':c=a%b;
break;
}
System.out.println(c);
}else {
System.out.println("Invalid operation. Try again.");
}
}
while(true);
}
}