Cod sursa(job #3343953)

Utilizator AndutsuAlexe Andrei-Cristian Andutsu Data 28 februarie 2026 19:42:40
Problema Lista lui Andrei Scor 35
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.93 kb
#include <fstream>
using namespace std;

const int N = 1000;
const int NL = 26;
const int MOD = 104659;

int nrc[N + 1][NL];
bool incomp[NL][NL];

int main() {
    ifstream in("nrcuv.in");
    ofstream out("nrcuv.out");

    int n, m;
    in >> n >> m;
    for (int i = 0; i < m; i++) {
        char x, y;
        in >> x >> y;
        incomp[x - 'a'][y - 'a'] = incomp[y - 'a'][x - 'a'] = true;
    }
    in.close();

    for (int j = 0; j < NL; j++) {
        nrc[1][j] = 1;
    }

    for (int i = 2; i <= n; i++) {
        for (int j = 0; j < NL; j++) {
            for (int k = 0; k < NL; k++) {
                if (!incomp[k][j]) {
                    nrc[i][j] = (nrc[i][j] + nrc[i - 1][k]) % MOD;
                }
            }
        }
    }

    int rez = 0;
    for (int j = 0; j < n ; j++) {
        rez = (rez + nrc[n][j]) % MOD;
    }
    out << rez << "\n";
    out.close();

    return 0;
}