#include <iostream>
using namespace std;

int main()
{
	int A;int B;char S;cin >> A >> S >> B;
	if (S == '+')
	{
		cout << A + B;
	}
	else if (S == '-')
	{
		cout << A - B;
	}
	else if (S == '*')
	{
		cout << A * B;
	}
	else if (S == '/')
	{
		cout << (A / B);
	}
	return 0;
}