#include
using namespace std;
int main()
{
char character;
cin>>character;
bool ans= false;
if (character=='*')
{
bool ans=true;
int N1,N2;
cin>>N1;
cin>>N2;
int product= (N1*N2);
cout<<product;
}
else if (character=='+')
{
bool ans=true;
int N1,N2;
cin>>N1;
cin>>N2;
int sum=N1+N2;
cout<<sum;
}
else if( character== '-'){
bool ans=true;
int N1,N2;
cin>>N1;
cin>>N2;
int difference=(N1- N2);
cout<< difference;
}
else if (character== '/')
{
bool ans=true;
int N1,N2;
cin>>N1;
cin>>N2;
float division=(N1/N2);
cout<<division;
}
else if (character== '%')
{
bool ans=true;
int N1,N2;
cin>>N1;
cin>>N2;
int remainder= (N1%N2);
cout<<remainder;
}
else if (character=='x' || character=='X')
{
bool ans=true;
}
if (ans=false)
{
cout<<“invalid”<<endl;
}
return 0;
}
// no test case coming successful but getting the answer on running the code