"""
Part 1
"""

print("Hello World!")

file = open("input/input", "r")

MAXIMUM = 0
current = 0

for line in file.readlines():
    line = line.strip()

    if line == "":
        # print("NEXT ELF")
        if current >= MAXIMUM:
            MAXIMUM = current
        current = 0
    else:
        line = int(line)
        current += line
        # print(line)

if current >= MAXIMUM:
    MAXIMUM = current

print(MAXIMUM)