a0,a1,a2,a3,a4,a5,a6,a7,a8,a9=map(int,input().split())
h=input()
num=0
for i in [a0,a1,a2,a3,a4,a5,a6,a7,a8,a9]:
    if ((int(i)) <= (int(h)+30)):
        num+=1
print(num)