mother = 0
now = 0
think = []
a = True
for i in range(12):
    think.append(int(input()))

for x in think:
    if(x <= 300):
        now += (300 - x + now)%100
        mother += (300 - x + now) - (300 - x + now)%100
    else:
        now -= x - 300
        if(now<0):
            print(-(think.index(x) + 1))
            a = False
            break
    if(now >= 100):
        now -= 100
if(a):
    now += mother + mother / 5
    print(now)
我寻思这也没问题啊！