/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.Scanner;
public class as{
public static float sum (float x,float y ){
return x + y;
}
public static void main
(String[]args
){ Scanner sc
=new Scanner
(System.
in); float input =sc.nextFloat();
float output =sc.nextFloat();
char op = sc.next().charAt(0);
switch(op){
case '+':
System.
out.
println(sum
(input,output
)); break;
}
}
}
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