#include<bits/stdc++.h>
using namespace std;

int main()
{
    char op;
    double a, b;
    cin >> a >> op >> b;
    if (op == '+')
    {
        double d = 1.0 * a + b;
        printf("%.2f", d);
    } 
    else if (op == '-')
    {
        double d = 1.0 * a - b;
        printf("%.2f", d);
    } 
    else if (op == '*')
    {
        double d = 1.0 * a * b;
        printf("%.2f", d);
    } 
    else if (op == '/' && b != 0)
    {
        double d = 1.0 * a / b;
        printf("%.2f", d);
    } 
    else
        cout << "No Answer." << endl;
	return 0;
}