f = open("file", "r")
Calories = f.read()
f.close()

somme = []
sum = 0

l_calories = Calories.split("\n\n")
for i in l_calories:
    liste = i.split("\n")
    for j in liste:
        sum += int(j)
    somme.append(sum)
    sum = 0

def sauver_noel(liste):
    for i in range(1, len(liste)-1):
        if liste[i-1] >= liste[i]:
            maxi = liste[i-1]
        else:
            maxi = liste[i]
    return maxi

print(sauver_noel(somme))