a=300
n=0
b=0
for i in range(1,13):
    sum=a+n
    s=int(input())
    n=sum-s
    if n>=100:
        b=b+(n//100)
        n=n%100
    if  i<12 and n<0:
        i=i
        break
j=(b*100)*1.2
if i<12:
    print("-",+i,sep='')
else:
    print(int(j))