#include "bits/stdc++.h"
#include<unordered_map>
#include<unordered_set>
#pragma warning(disable:4996)
using namespace std;
using ld = long double;
template<class T>
using Table = vector<vector<T>>;



const int mod = 1000000007;
struct Mod {
public:
	int num;
	Mod() : Mod(0) { ; }
	Mod(long long int n) : num((n % mod + mod) % mod) {
		static_assert(mod<INT_MAX / 2, "mod is too big, please make num 'long long int' from 'int'");
	}
	Mod(int n) : Mod(static_cast<long long int>(n)) { ; }
	operator int() { return num; }
};

Mod operator+(const Mod a, const Mod b) { return Mod((a.num + b.num) % mod); }
Mod operator+(const long long int a, const Mod b) { return Mod(a) + b; }
Mod operator+(const Mod a, const long long int  b) { return b + a; }
Mod operator++(Mod &a) { return a + Mod(1); }
Mod operator-(const Mod a, const Mod b) { return Mod((mod + a.num - b.num) % mod); }
Mod operator-(const long long int a, const Mod b) { return Mod(a) - b; }
Mod operator--(Mod &a) { return a - Mod(1); }
Mod operator*(const Mod a, const Mod b) { return Mod(((long long)a.num * b.num) % mod); }
Mod operator*(const long long int a, const Mod b) { return Mod(a)*b; }
Mod operator*(const Mod a, const long long int b) { return Mod(b)*a; }
Mod operator*(const Mod a, const int b) { return Mod(b)*a; }
Mod operator+=(Mod &a, const Mod b) { return a = a + b; }
Mod operator+=(long long int &a, const Mod b) { return a = a + b; }
Mod operator-=(Mod &a, const Mod b) { return a = a - b; }
Mod operator-=(long long int &a, const Mod b) { return a = a - b; }
Mod operator*=(Mod &a, const Mod b) { return a = a * b; }
Mod operator*=(long long int &a, const Mod b) { return a = a * b; }
Mod operator*=(Mod& a, const long long int &b) { return a = a * b; }
Mod operator^(const Mod a, const int n) {
	if (n == 0) return Mod(1);
	Mod res = (a * a) ^ (n / 2);
	if (n % 2) res = res * a;
	return res;
}
Mod mod_pow(const Mod a, const int n) {
	if (n == 0) return Mod(1);
	Mod res = mod_pow((a * a), (n / 2));
	if (n % 2) res = res * a;
	return res;
}
Mod inv(const Mod a) { return a ^ (mod - 2); }
Mod operator/(const Mod a, const Mod b) {
	assert(b.num != 0);
	return a * inv(b);
}
Mod operator/(const long long int a, const Mod b) {
	assert(b.num != 0);
	return Mod(a) * inv(b);
}
Mod operator/=(Mod &a, const Mod b) {
	assert(b.num != 0);
	return a = a * inv(b);
}

#define MAX_MOD_N 1024

Mod fact[MAX_MOD_N], factinv[MAX_MOD_N],memo[400];
void init() {
	fact[0] = Mod(1); factinv[0] = 1;
	for (int i = 0; i < MAX_MOD_N - 1; ++i) {
		fact[i + 1] = fact[i] * Mod(i + 1);
		factinv[i + 1] = factinv[i] / Mod(i + 1);
	}
	
}
Mod comb(const int a, const int b) {
	return fact[a] * factinv[b] * factinv[a - b];
}


int main() {
	init();
	for (int i = 0; i < 300; ++i) {
		memo[i] = 0;
		for (int j = 0; j <= i; ++j) {
			memo[i] +=comb(i,j)* fact[j];
		}
	}
	int N; cin >> N;
	vector<int>ketas(5);
	vector<int>sums(5);
	bool have_zero = false;
	for (int i = 0; i < N; ++i) {
		int a; cin >> a;
		if (!a) {
			have_zero = true;
		}
		const int keta = to_string(a).size();
		ketas[keta]++;
		sums[keta]+=a;
	}
	Mod ans = 0;
	for (int keta = 1; keta <= 4; ++keta) {
		ketas[keta]--;
		vector<int>under_nums(5);
		
		for (under_nums[1] = 0; under_nums[1] <= ketas[1]; ++under_nums[1]) {
			for (under_nums[2] = 0; under_nums[2] <= ketas[2]; ++under_nums[2]) {
				for (under_nums[3] = 0; under_nums[3] <= ketas[3]; ++under_nums[3]) {
					for (under_nums[4] = 0; under_nums[4] <= ketas[4]; ++under_nums[4]) {
						Mod under_choice = 1;
						int under_size = 0;
						for (int i = 1; i <= 4; ++i) {
							under_size += under_nums[i] * i;
							under_choice *= comb(ketas[i], under_nums[i]);
						}
						int under_count = accumulate(under_nums.begin(), under_nums.end(), 0);
						Mod under_perm =fact[under_count];
						
						int above_sum = accumulate(ketas.begin(), ketas.end(), 0) - accumulate(under_nums.begin(), under_nums.end(), 0);
						Mod above_choice = memo[above_sum];
						ans += Mod(sums[keta]) * under_choice*under_perm*above_choice*mod_pow(Mod(10),under_size);
					}
				}
			}
		}
		ketas[keta]++;
	}
	if (have_zero) {
		ketas[1]--;
		for (int keta = 1; keta <= 4; ++keta) {
			ketas[keta]--;
			vector<int>under_nums(5);

			for (under_nums[1] = 0; under_nums[1] <= ketas[1]; ++under_nums[1]) {
				for (under_nums[2] = 0; under_nums[2] <= ketas[2]; ++under_nums[2]) {
					for (under_nums[3] = 0; under_nums[3] <= ketas[3]; ++under_nums[3]) {
						for (under_nums[4] = 0; under_nums[4] <= ketas[4]; ++under_nums[4]) {
							Mod under_choice = 1;
							int under_size = 0;
							for (int i = 1; i <= 4; ++i) {
								under_size += under_nums[i] * i;
								under_choice *= comb(ketas[i], under_nums[i]);
							}
							int under_count = accumulate(under_nums.begin(), under_nums.end(), 0);
							Mod under_perm = fact[under_count];
							int above_sum = accumulate(ketas.begin(), ketas.end(), 0) - accumulate(under_nums.begin(), under_nums.end(), 0);
							Mod above_choice = memo[above_sum];
							ans -= Mod(sums[keta]) * under_choice*under_perm*above_choice*mod_pow(Mod(10), under_size);
						}
					}
				}
			}
			ketas[keta]++;
		}
	}
	cout << ans << endl;
	return 0;
}

Measured memory_bytes: 3288