import std.stdio, std.array, std.string, std.conv, std.algorithm;
import std.typecons, std.range, std.random, std.math, std.container;
import std.numeric, std.bigint, core.bitop;

void main() {
    auto N = readln.chomp.to!int;
    auto A = 0 ~ readln.split.map!(to!long).array;

    immutable long MOD = 10^^9 + 7;
    long mx = 0; foreach (a; A) mx = max(mx, a);

    if (mx == A.sum) {
        long ans = ((powmod(10, N, MOD) - 1 + MOD) % MOD) * powmod(9, MOD-2, MOD) % MOD;
        foreach (i; 1..10) if (A[i]) ans = ans * i % MOD;
        ans.writeln;
        return;
    }

    bool all_even = iota(1, 10, 2).map!(i => A[i] == 0).all;
    long sm = 0;
    foreach (i; 1..10) sm += A[i] * i;

    if (sm % 9 == 0) {
        writeln(9);
    } else if (sm % 3 == 0) {
        if (all_even) {
            writeln(6);
        } else {
            writeln(3);
        }
    } else {
        writeln(1);
    }
}

long powmod(long a, long x, long m) {
    long ret = 1;
    while (x) {
        if (x % 2) ret = ret * a % m;
        a = a * a % m;
        x /= 2;
    }
    return ret;
}