\begin{array}{c} \color{#db1616}{\texttt{#Khoadang09}} \end{array}
`@`$\texttt{Python: }$

a, b, c = map(float,input().split())
if a == b and b == c :
    print("Deu")
elif a ** 2 == b ** 2 + c ** 2 or b ** 2 == a ** 2 + c ** 2 or c ** 2 == a ** 2 + b ** 2 :
    if a == b or b == c or a == c :
        print("Vuong can")
    else :
        print("Vuong")
elif a == b or b == c or a == c :
    print("Can")
p = (a + b + c) / 2
print(f"Chu vi: {a+b+c:.2f}")
print(f"Dien tich: {(p*(p-a)*(p-b)*(p-c))**0.5:.2f}")