Program baitap;

Uses crt;

Var a,b:integer;

Begin

Clrscr;

Write('a='); Readln(a);

Write('b='); Readln(b);

If a=b then writeln('a va b la canh cua hinh vuong, chu vi:', a*4)

           Else writeln('a va b la canh cua hinh chu nhat, chu vi:',(a+b)*2);

Readln

End.

a = int(input("nhap so a"))
b = int(input("nhap so b"))
if (a > b):
    print("day la hinh chu nhat", (a + b) * 2)
elif (b < a):
    print("day la hinh chu nhat", (a + b) * 2)
elif(a == b):
    print("day la hinh vuong " ,a * 4)
elif(b == a):
    print("day la hinh vuong ", a * 4)