import java.io.*;
import java.util.*;

public class Main {
    static final int MOD = 1000000007;
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] counts = new int[10];
        for (int i = 1; i < 10; i++) {
            counts[i] = sc.nextInt();
        }
        long base = fact(n - 1);
        for (int i = 1; i < 10; i++) {
            base *= pow(fact(counts[i]), MOD - 2);
            base %= MOD;
        }
        long current = 1;
        long ans = 0;
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j < 10; j++) {
                ans += j * counts[j] % MOD * base % MOD * current % MOD;
                ans %= MOD;
            }
            current *= 10;
            current %= MOD;
        }
        System.out.println(ans);
    }
    
    static long fact(int x) {
        long ans = 1;
        for (int i = 1; i <= x; i++) {
            ans *= i;
            ans %= MOD;
        }
        return ans;
    }
    
    static long pow(long x, int p) {
        if (p == 0) {
            return 1;
        } else if (p % 2 == 0) {
            return pow(x * x % MOD, p / 2);
        } else {
            return pow(x, p - 1) * x % MOD;
        }
    }
}
    
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}