#include<fstream>
using namespace std;
int n, a, b, c, x, m, sum, t1, t2, t3, i, d, s, j;
int v[1000], f[1000];
ifstream fin("koba.in");
ofstream fout("koba.out");
int main(){
	fin>> n >> t1 >> t2 >> t3;
	a = t1 % 10;
	b = t2 % 10;
	c = t3 % 10;
	x = a * 100 + b * 10 + c;
	v[x] = 1;
	f[1] = x;
	d = (a * b + c) % 10;
	x = b * 100 + c * 10 + d;
	v[x] = 2;
	s = a + b + c + d;
	f[2] = x;
	if(x != f[1]){
		for(i = 3; i <= n; i++){
			a = b;
			b = c;
			c = d;
			d = (a * b + c) % 10;
			s += d;
			x = b * 100 + c * 10 + d;
			f[i] = x;
			if(v[x] != 0){
				break;
			}
			else{
				v[x] = i;
			}
		}
	}
	s-= (x / 100 + x / 10 % 10 + x % 10);
	m = i - v[x];
	for(j = v[x] - 2; j < v[x] + m - 2; j++){
		sum += f[j] % 10;
	}
	n -= (i-1);
	s += (n / m) * sum;
	for(j = v[x] - 2; j < n % m + v[x] - 2; j++){
		s += f[j] % 10;
	}
	fout<< s;
	return 0;
}