#include <fstream>
using namespace std;
ifstream in("nrcuv.in");
ofstream out("nrcuv.out");
const int N = 1001, ALFA = 27, PRIM = 104659;
bool incompatibil[ALFA][ALFA];
int comb[N][ALFA];
int main()
{
    int n, k, rez = 0, i, j;
    char a, b;
    in >> n >> k;
    for(i = 1; i <= k; i++){
        in >> a >> b;
        incompatibil[int(a)-'a'+1][int(b)-'a'+1] = true;
        incompatibil[int(b)-'a'+1][int(a)-'a'+1] = true;
    }
    for(j = 1; j < ALFA; j++){
        comb[1][j] = 1;
    }
    for(i = 2; i <= n; i++){
        for(j = 1; j < ALFA; j++){
            for(k = 1; k < ALFA; k++){
                comb[i][j] += (comb[i-1][k]*!(incompatibil[k][j]))%PRIM;
            }
        }
    }
    for(j = 1; j < ALFA; j++){
        rez += comb[n][j];
    }
    out << rez;
    return 0;
}