/*#include <stdio.h>
it main()
{
printf("Hello world!\n");
return 0;
}
*/
/*
#include<stdio.h>
int main()
{
int f,d;
char s;
scanf("%d%c%d",&f,&s,&d);
switch(s)
{
case '+':printf("%d",f+d);break;
case '-':printf("%d",f-d);break;
case '*':printf("%d",f*d);break;
case '/':printf("%.2f",(float)f/d);break;
return 0;
}
*/
/*
#include<stdio.h>
int main()
{
int f;
scanf("%d",&f);
switch(f/10)
{
case 10 :
case 9 : printf("A");break;
case 8 : printf("B");break;
case 7 : printf("C");break;
case 6 : printf("D");break;
default :printf("F");break;
}
return 0;
}
*/
/*
#include<stdio.h>
int main()
{
int f,d,s,a;
scanf("%d %d\n%d",&f,&d,&s);
a=d+s;
printf("%d %d",( f + a/60 )%24 ,a%60);
return 0;
}
*/
#include<stdio.h>
int main()
{
int f,d,s;
scanf("%d%c%d",&f,&s,&d);
switch(s)
{
case '+': printf("%d",f+d);break;
case '-': printf("%d",f-d);break;
case '*': printf("%d",f*d);break;
case '/': printf("%.2f",(float)f/d);break;
}
return 0;
}