#include <iostream>
#include <iomanip>
using namespace std;
char a[5];
int main(){
    long double n,m;
    cin>>n>>a[0]>>m;
    if(a[0]=='+')
        cout<<fixed<<setprecision(2)<<n+m;
    else if(a[0]=='-')
        cout<<fixed<<setprecision(2)<<n-m;
    else if(a[0]=='*')
        cout<<fixed<<setprecision(2)<<n*m;
    else{
        if(m==0){
            cout<<"No Answer.";
            return 0;
        }
        cout<<fixed<<setprecision(2)<<n/m;
    }
    return 0;
}