from array import array

epsilon = 0.001
pieces = array('d', [2, 1., 0.5, 0.2, 0.1, 0.05, 0.02, 0.01])
valeur = float(input("somme : "))
quantites = array('i', range(0, len(pieces)))
for i in range(0, len(pieces)) :
    quantites[i] = int(valeur // pieces[i])
    valeur = valeur - pieces[i] * quantites[i] + epsilon
    print (str(quantites[i]) + " pièce(s) de " + str(pieces[i]))