import math

def normaFrobenius(matrice: list) -> int:
    sumaPatrate = 0

    for i in range(len(matrice)):
        for j in range(len(matrice[i])):
            sumaPatrate += matrice[i][j] ** 2

    rezultat = math.sqrt(sumaPatrate)
    final = round(rezultat, 3)
    return final