def matriz_nula(m, n):
    matriz = []
    for i in range(m):
        fila = []
        for j in range(n):
            fila += [0]
        matriz += [fila]
    return matriz
 
def matIndices(f, c):
    Mat = matriz_nula(f, c)  # Corrección aquí
    f1, c1 = len(Mat), len(Mat[0])
    for k in range(f * c):
        i = k // c  # Índice de fila
        j = k % c   # Índice de columna
        Mat[i][j] = k
    return Mat
 
# Ejemplo de uso
print(matIndices(3, 5))
 

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