Cod sursa(job #3338747)

Utilizator mihiboiBacis Mihai-Cristian mihiboi Data 4 februarie 2026 19:46:08
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.8 kb
#include <bits/stdc++.h>
using namespace std;
#define MOD 104659
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");

int n, m, dp[27][1001], p[27][27], x, y, s;
char c;

int main() {
    fin >> n >> m;
    for(int i = 0; i < m; i++) {
        fin >> c;
        x = c - 'a';
        fin >> c;
        y = c - 'a';
        p[x][y] = 1;
        p[y][x] = 1;
    }
    
    for(int i = 0; i < 26; i++) {
        dp[i][1]=1;
    }
    
    for(int i = 2; i <= n; i++)
        for(int j = 0; j < 26; j++) {
            dp[j][i]=0;
            for(int k = 0; k < 26; k++)
                if(p[j][k] == 0)
                    dp[j][i] = (dp[j][i] + dp[k][i-1]) % MOD;
        }
        
    for(int i = 0; i < 26; i++)
        s = (s + dp[i][n]) % MOD;
        
    fout << s;
    return 0;
}