11 cin
>> a
[0] >> a
[1] >> a
[2] >> a
[3];
14 if (a
[0] == a
[1] && a
[1] == a
[2] && a
[2] == a
[3] && a
[3] == a
[0]){
15 cout
<< "square" << endl
;
19 if (a
[0] == a
[1] && a
[2] == a
[3]){
20 cout
<< "rectangle" << endl
;
24 if (a
[0]+a
[1]+a
[2] >= a
[3]){
25 cout
<< "quadrangle" << endl
;
28 cout
<< "banana" << endl
;