1

#include <iostream>
using namespace std;
main()
{

    int a;
    cout << "Vvedite storonu chetyrekhugol'nika ";
    cin >> a;
    cout << "Perimetr chetyrekhugol'nika = "<<(a*4)<<endl;
    cout << "Ploshchad' chetyrekhugol'nika = "<< (a*a);
    return 0;
}