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

    dp = [0 for _ in range(n++11)]
    for i in range(n+1):
        dp[i+3] = max(dp[i+3],dp[i]+a)
        dp[i+5] = max(dp[i+5],dp[i]+b)
        dp[i+10] = max(dp[i+10],dp[i]+c)
        dp[i+1] = max(dp[i+1],dp[i])


    print(dp[n])


if __name__ == '__main__':
    main()