Implement a method that accepts 3 integer values a, b, c. The method should return true if a triangle can be built with the sides of given length and false in any other case.
(In this case, all triangles must have surface greater than 0 to be accepted).
def is_triangle(a, b, c):
    return all([a+b>c, a+c>b, b+c>a])

def is_triangle(a, b, c):
    return all([a+b>c, a+c>b, b+c>a])
