def function_tri(tableau):
    for tab in tableau:
        for i in range(1, len(tab)):
            for i in range(1, len(tab)):
                if tab[i] < tab[i-1]:
                    a = tab[i]
                    tab[i] = tab[i-1]
                    tab[i-1] = a
    for i in range (1, len(tableau)):
        for i in range (1, len(tableau)):
            if tableau[i][0] < tableau[i][0]:
                a = tableau[i]
                tableau[i] = tableau[i-1]
                tableau[i-1] = a 
    print(tableau)

function_tri([[4,0,3], [5,3,2], [3,6,5]])