#include <iostream>
using namespace std;
#define maxc 50000

int N, V[10];
int A[maxc], B[maxc], auxA[maxc], auxB[maxc], C[maxc];

void mul() {
      int i, j, t;
      memset(C, 0, sizeof(C));
      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;
      }
      memcpy(A, C, sizeof(C));
}

int cmp() {
    if(auxA[0] < auxB[0]) return -1;
    else if(auxA[0] > auxB[0]) return 1;
    
    for(int i=auxA[0]; i>=1; i--) {
         if(auxA[i] > auxB[i]) return 1;
         else if(auxA[i] < auxB[i]) return -1;
    }
    
    return 0;
}

int main() {
    FILE *f1=fopen("prod.in", "r"), *f2=fopen("prod.out", "w");
    int i, j, p, q;
    for(i=1; i<=9; i++) {
         fscanf(f1, "%d", &V[i]);
    }
 
    A[0] = B[0] = 0;
    for(i=9; i>=1; i--) {
         while(V[i]) {
              //adaug i la cel mai mic dintre numere
              
              int nr = 1;
              while(A[nr]) {
                   nr++;
              }
              auxA[0] = nr - 1;
              for(j=1; j<nr; j++) {
                   auxA[j] = A[nr - j];
              }
              
              nr = 1;
              while(B[nr]) {
                   nr++;
              }
              auxB[0] = nr - 1;
              for(j=1; j<nr; j++) {
                   auxB[j] = B[nr - j];
              }
              
              int p = cmp();
              if(p <=0 ) {
                   A[0]++;
                   A[ A[0] ] = i;
              }
              else {
                   B[0]++;
                   B[ B[0] ] = i;
              }
              V[i]--;
         }
    }
    
    for(i=A[0]; i>=1; i--) {
         auxA[i] = A[i];
    }
    for(i=1; i<=A[0]; i++) {
         A[i] = auxA[ A[0] - i + 1];
    }
    
    for(i=B[0]; i>=1; i--) {
         auxB[i] = B[i];
    }
    for(i=1; i<=B[0]; i++) {
         B[i] = auxB[ B[0] - i + 1];
    }
    
    mul();
    
    for(i=A[0]; i>=1; i--) {
         fprintf(f2, "%d", A[i]);
    }
    fclose(f1); fclose(f2);
    return 0;
}