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huiwen.py

# coding=utf-8
n = int(raw_input().strip())
item = [int(x) for x in raw_input().strip().split()]

def huiwen(item, head, tail):
    times=0
    left = item[head]
    right = item[tail]

    while (head < tail):
        if left < right:
            head += 1
            left += item[head]
            times += 1
            continue
        elif left > right:
            tail -= 1
            right += item[tail]
            times += 1
            continue
        elif left == right:
            head += 1
            tail -= 1
            left = item[head]
            right = item[tail]

    return times

print huiwen(item, 0, n-1)