def calculate_sum(prefixes, start, end):
    return prefixes[end + 1] - prefixes[start]


numbers_amount = int(input())
numbers = [int(input()) for _ in range(numbers_amount)]
prefixes = [0]
for index in range(numbers_amount):
    prefixes.append(prefixes[index] + numbers[index])
best_start = 0
best_end = 0
current_start = 0
for index in range(numbers_amount):
    if calculate_sum(prefixes, current_start, index) > calculate_sum(prefixes, best_start, best_end):
        best_end = index
        best_start = current_start
    if calculate_sum(prefixes, current_start, index - 1) <= 0:
        current_start = index
print(best_start + 1, best_end + 1)