#include <iostream>
using namespace std;
int sum(int a, int b)
{
int c=a+b;
return c;
}
int sub(int a, int b)
{
int c=a-b;
return c;
}
float mult(int a, int b)
{
int c=a*b;
return c;
}
float div(int a, int b)
{
int c=a/b;
return c;
}
int main ()
{
int x,y,q;
char zn;
cin >> x >> zn >> y;
switch(zn)
{
case '+' :
q = sum( x, y );
break;
case '-' :
q = sub( x, y );
break;
case '*' :
q = mult( x, y );
break;
case '/' :
q = div( x, y );
break;
}
cout << q;
}
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