/* -*- coding: utf-8 -*-
 *
 * 2386.cc:  No.2386 Udon Coupon (Easy) - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

const int M = 30;

/* typedef */

/* global variables */

int dp[M + 1];

/* subroutines */

inline void setmax(int &a, int b) { if (a < b) a = b; }

/* main */

int main() {
  int n, a, b, c;
  scanf("%d%d%d%d", &n, &a, &b, &c);

  int q = n / M, r = n % M;

  fill(dp, dp + M + 1, -1);
  dp[0] = 0;
  for (int i = 0; i + 3 <= r; i++)
    if (dp[i] >= 0) setmax(dp[i + 3], dp[i] + a);
  for (int i = 0; i + 5 <= r; i++)
    if (dp[i] >= 0) setmax(dp[i + 5], dp[i] + b);
  for (int i = 0; i + 10 <= r; i++)
    if (dp[i] >= 0) setmax(dp[i + 10], dp[i] + c);

  int x =
    max(max(10 * a, 6 * b), 3 * c) * q +
    *max_element(dp, dp + r + 1);

  printf("%d\n", x);

  return 0;
}