#include <iostream>

using namespace std;

class LogariasmosTrapezas{
private:
  double PosoLogariasmou;
  double Epitokio;
public:
   void set_Katathesi(double x);
   void set_Epitokio(double y);
   double ipologismos_Katathesis(double n);
};

void LogariasmosTrapezas::set_Katathesi(double x){
    PosoLogariasmou=x;
}
void LogariasmosTrapezas::set_Epitokio(double y){
    Epitokio=y/100;
}
double LogariasmosTrapezas::ipologismos_Katathesis(double n){
    n=(double)n;
    while(n>0){
        PosoLogariasmou= PosoLogariasmou+(PosoLogariasmou*Epitokio);
        n=n-1;
    }
    return PosoLogariasmou;
}

int main(){
    double poso_logar,epitokio,xronia_tokismou,final;
    LogariasmosTrapezas l1;
    cout<<"Dwse arxiko poso tou logariasmou sas: "<<endl;
    cin>>poso_logar;
    cout<<"Dwse timh gia to epitokio: "<<endl;
    cin>>epitokio;
    cout<<"Dwse xronia tokimsou: "<<endl;
    cin>>xronia_tokismou;
    l1.set_Katathesi(poso_logar);
    l1.set_Epitokio(epitokio);
    final=l1.ipologismos_Katathesis(xronia_tokismou);
    cout<<"O telikos logariasmos tis katathesis sas meta apo: "<<xronia_tokismou<<" xronia tha einai :"<<final<<"€"<<endl;


}