""" OBTENER LETRA DE CALIFICACION EQUIVALENTE A UN NUMERO"""
"""JUAN PABLO RAMIREZ IBARRA"""

def calificacion(cal):

    if cal == 10:
        print('A')
    if cal >= 8 and cal <=9 :
        print ('B')
    if cal >= 6 and cal <= 7 :
        print ('C')
    if cal == 5 :
        print ('D')
