#include <iostream>
using namespace std;

int main()
{
    int shu1, shu2;
    char fu;
    cin >> shu1 >> fu >> shu2;

    int da = 0;
    if (fu == '+')
    {
        da = shu1 + shu2;
    }
    else if (fu == '-')
    {
        da = shu1 - shu2;
    }
    else if (fu == '*')
    {
        da = shu1 * shu2;
    }
    else if (fu == '/')
    {
        da = shu1 / shu2;
    }
    else
    {
        da = shu1 % shu2;
    }

    cout << da;

    return 0;
}

using namespace std;
int Operation( int a,char op,int b)
{
	if(op=='+') return a+b;
	else if(op=='-') return a-b;
	else if(op=='*') return a*b;
	else if(op=='/') return a/b;
	else if(op=='%') return a%b;	
}
int main()
{
	int a=0,b=0;
	char op;
	cin>>a>>op>>b;
	cout<<Operation(a,op,b);
	return 0;
}

#include <iostream>
using namespace std;

int main()
{
    int shu1, shu2;
    char fu;
    cin >> shu1 >> fu >> shu2;

    int da = 0;
    if (fu == '+')
    {
        da = shu1 + shu2;
    }
    else if (fu == '-')
    {
        da = shu1 - shu2;
    }
    else if (fu == '*')
    {
        da = shu1 * shu2;
    }
    else if (fu == '/')
    {
        da = shu1 / shu2;
    }
    else
    {
        da = shu1 % shu2;
    }

    cout << da;

    return 0;
}