# Question: Write a Python program to accept three sides and check whether they form a valid triangle.

def main(sides: tuple[int, int, int]) -> None:
    a, b, c = sides
    if a + b > c and a + c > b and b + c > a:
        print(f"The sides {sides} form a valid triangle.")
    else:
        print(f"The sides {sides} do not form a valid triangle.")

if __name__ == '__main__':
    main((3, 4, 5))
    main((1, 2, 3))
    main((5, 12, 13))
    main((7, 10, 5))
    main((1, 1, 2))