#include <algorithm>
#include <stdio.h>
using namespace std;

#define MAX 1505
#define DIM 15

int f[DIM],n1[MAX],n2[MAX],rez1[MAX],rez2[MAX],fin[MAX];
int nrt;

void read ()
{
    int i;

    for (i=1; i<10; ++i)
    {
        scanf ("%d",&f[i]);
        nrt+=f[i];
    }
}

inline int find ()
{
    int i;

    for (i=9; i>=1; --i)
        if (f[i])
        {
            --f[i];
            return i;
        }
    return 0;
}

inline void memset (int a[MAX],int val)
{
    int i;

    for (i=0; i<MAX; ++i)
        a[i]=val;
}

inline void mult_mare (int c[MAX],int a[MAX],int b[MAX])
{
    int i,j,t;

    memset (c,0);
    for (i=1; i<=a[0]; ++i)
    {
        for (t=0, j=1; j<=b[0] || t; ++j, t/=10)
            c[i+j-1]=(t+=c[i+j-1]+a[i]*b[j])%10;
        if (i+j-2>c[0])
            c[0]=i+j-2;
    }
}

inline void print (int a[MAX])
{
    int i;

    for (i=a[0]; i>=1; --i)
        printf ("%d",a[i]);
}

inline int cmp (int a[MAX],int b[MAX])
{
    int i;

    if (a[0]<b[0])
        return -1;
    else if (a[0]>b[0])
        return 1;
    else
        for (i=a[0]; i>=1; --i)
            if (a[i]<b[i])
                return -1;
            else if (a[i]>b[i])
                return 1;
    return 0;
}

void solve ()
{
    int c,c1,c2;

    while (nrt>1)
    {
        c1=find (); c2=find (); nrt-=2;

        n1[++n1[0]]=c1;
        n2[++n2[0]]=c2;
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);
        mult_mare (rez1,n1,n2);
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);

        n1[n1[0]]=c2;
        n2[n2[0]]=c1;
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);
        mult_mare (rez2,n1,n2);
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);

        if (cmp (rez1,rez2)>0)
        {
            n1[n1[0]]=c1;
            n2[n2[0]]=c2;
        }
        else
        {
            n1[n1[0]]=c2;
            n2[n2[0]]=c1;
        }
    }
    if (nrt)
    {
        c=find ();

        n1[++n1[0]]=c;
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);
        mult_mare (rez1,n1,n2);
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);
        n1[n1[0]--]=0;

        n2[++n2[0]]=c;
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);
        mult_mare (rez2,n1,n2);
        reverse (n1+1,n1+n1[0]+1);
        reverse (n2+1,n2+n2[0]+1);
        n2[n2[0]--]=0;

        if (cmp (rez1,rez2)>0)
            n1[++n1[0]]=c;
        else
            n2[++n2[0]]=c;
    }
    reverse (n1+1,n1+n1[0]+1);
    reverse (n2+1,n2+n2[0]+1);
    mult_mare (fin,n1,n2);
    print (fin);
}

int main ()
{
    freopen ("prod.in","r",stdin);
    freopen ("prod.out","w",stdout);

    read ();
    solve ();

    return 0;
}