a1,a2,a3.a4.a5.a6.a7.a8.a9,a10 = map(int,input().split()) t = int(input()) i = 1 if a1<=t+30: i = i+1 elif a2<=t+30: i = i+1 elif a3<=t+30: i = i+1 elif a4<=t+30: i = i+1 elif a5<=t+30: i = i+1 elif a6<=t+30: i = i+1 elif a7<=t+30: i = i+1 elif a8<=t+30: i = i+1 elif a9<=t+30: i = i+1 elif a10<=t+30: i = i+1 else: i = i+0 print(i)