#define _GLIBCXX_FILESYSTEM
#include <bits/stdc++.h>
using namespace std;
int c[1001];
int v[2001];
int n, t1, t2, t3, t, i, j, _next, last, sp, sc, st, ok, pic, rest;
int main(){
    ifstream fin("koba.in");
    fin >> n >> t1 >> t2 >> t3;
    c[1] = t1 % 10;
    c[2] = t2 % 10;
    c[3] = ((1 * 10 + t1 % 10) * 10 + t2 % 10) * 10 + t3 % 10;
    t1 = t1 % 10;
    t2 = t2 % 10;
    t3 = t3 % 10;
    v[c[3]] = 1;
    for(i = 4; i <= 1001; i++){
        last = c[i - 1];
        t = (t3 + t2 * t1) % 10;
        _next = (1 * 100 + last % 100) * 10 + t;
        if(v[_next] == 1)
            break;
        c[i] = _next;
        v[_next] = 1;
        t1 = t2;
        t2 = t3;
        t3 = t;
    }
    i = i - 1;
    sp = 0;
    ok = 0;
    sc = 0;
    for(j = 1; j <= i; j++){
        if(c[j] == _next){
            ok = 1;
            pic = j;
        }
        if(ok==1)
            sc = sc + c[j] % 10;
        else
            sp = sp + c[j] % 10;
    }
    st = sp;
    n = n - (pic - 1);
    rest = n % (j - pic);
    st = st + (n / (j - pic)) * sc;
    for(i = 0; i < rest; i++)
        st = st + (c[pic + i] % 10);
    ofstream fout("koba.out");
    fout << st;
    return 0;
}