#include
#include
#include
#include
#include
using namespace std;
class Calculater{
bool b;
double n,n1,m;
string dr;
double ope(){
cin>>n1;
switch(dr[0]){
case '+':return n+n1;
case '-':return n-n1;
case '*':return n*n1;
case '/':return n/n1;
}
return 0;
}
double power(){
cin>>n1;
return pow(n,n1);
}
double extract(){
return sqrt(n);
}
void trans(){
int o;
if(n!=floor(n)){
cout