Concurs forme

#include <iostream>
#include <vector>
#include <string>
#define pi 3.14159265359
using namespace std;

int main()
{
    int n;
    string aux;
    float l,l1,l2,r;
    vector <string> forma;
    vector <float> suprafata;
    cin>>n;
    for(int i=0;i<n;i++)
    {
        cin>>aux;
        forma.push_back(aux);
        if(aux =="patrat")
        {
            cin>>l;
            suprafata.push_back(l*l);
        }
        else
            if(aux=="dreptunghi")
            {
                cin>>l1,l2;
                suprafata.push_back(l1*l2);
            }
            else
                if(aux=="cerc")
                {
                    cin>>r;
                    suprafata.push_back(pi*r*r);
                }
    }
    for(int i=0;i<forma.size();i++)
    {
        cout<<forma.at(i)<<" "<<suprafata.at(i)<<endl;
    }
}