#include<iostream> using namespace std; int main() { double a,b; char op; cin>>a>>b>>op; if(op=='+') { cout<<a+b; } else if(op=='-') { cout<<a-b; } else if(op=='*') { cout<<a*b; } else if(op=='/') { if(b==0) { cout<<"Divided by zero!"; } else { cout<<a/b; } } return 0; }