#include <stdio.h>

int main () {
  int n = 0;
  int a = 0;
  int b = 0;
  int c = 0;
    
  int res = 0;
  
  int dp[200001] = {};
  
  res = scanf("%d", &n);
  res = scanf("%d", &a);
  res = scanf("%d", &b);
  res = scanf("%d", &c);
  
  for (int i = 0; i <= n; i++) {
    if (i >= 3 && dp[i] < dp[i-3]+a) {
      dp[i] = dp[i-3]+a;
    }
    if (i >= 5 && dp[i] < dp[i-5]+b) {
      dp[i] = dp[i-5]+b;
    }
    if (i >= 10 && dp[i] < dp[i-10]+c) {
      dp[i] = dp[i-10]+c;
    }
  }
  
  printf("%d\n", dp[n]);
  return 0;
}