n=int(input())
a,b,c=map(int,input().split())

dp=[-1]*(n+1)
dp[0]=0
for i in range(n+1):
  if 0<=i-3 and 0<=dp[i-3]:
    dp[i]=max(dp[i],dp[i-3]+a)
  if 0<=i-5 and 0<=dp[i-5]:
    dp[i]=max(dp[i],dp[i-5]+b)
  if 0<=i-10 and 0<=dp[i-10]:
    dp[i]=max(dp[i],dp[i-10]+c)

print(max(dp))