Python3 代码

a, b, c = input().split()
a = eval(a)
b = eval(b)
c = eval(c) 
if a >= b and a >= c:
    A = a
    if b > c:
        B = b
        C = c
    else:
        B = c
        C = b
elif b >= a and b >= c:
    A = b
    if a > c:
        B = a
        C = c
    else:
        B = c
        C = a
elif c >= b and c >= a:
    A = c
    if b > a:
        B = b
        C = a
    else:
        B = a
        C = b
if A >= B + C:
    print("NAO FORMA TRIANGULO")
else:
    if A*A == B*B + C*C:
        print("TRIANGULO RETANGULO")
    if A*A > B*B + C*C:
        print("TRIANGULO OBTUSANGULO")
    if A*A < B*B + C*C:
        print("TRIANGULO ACUTANGULO")
    if A == B == C:
        print("TRIANGULO EQUILATERO")
    if A == B != C or A == C != B or B == C != A:
        print("TRIANGULO ISOSCELES")