Cod sursa(job #2977104)

Utilizator mati.coldea@gmail.comMatei Coldea [email protected] Data 10 februarie 2023 19:50:21
Problema Lista lui Andrei Scor 20
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.83 kb
#include <bits/stdc++.h>;

#include <fstream>

#define INF 100001
#define MOD 104659
using namespace std;

ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");;

int n, m;
vector<set<int>> cuv(1000);
int val[1005];
int dp[1005];
int main()
{


    fin >> n >> m;
    char x, y;
    for (int i = 1; i<=m; i++) {
        fin >> x >> y;
        cuv[x].insert(y);
        cuv[y].insert(x);

        
    }


    for (int i = 'a'; i <= 'z'; i++) {
        val[i] = cuv[i].size();
    }
    dp[0] = 1;
    dp[1] = 26;

    for (int i = 2; i <= n; i++) {
        int pos=0;
        for (int j = 'a'; j <= 'z'; j++) {
           pos+= 26-val[j];
        }
        //cout << pos;
        dp[i] = (dp[i-2]%MOD*pos%MOD)%MOD;
    }
    
    fout << dp[n];


  
    fin.close();
    fout.close();
    return 0;
}