Pagini recente » Cod sursa (job #2342881) | Cod sursa (job #1966295) | Cod sursa (job #2538358) | Cod sursa (job #1068789) | Cod sursa (job #3002520)
#include <iostream>
#include <fstream>
using namespace std;
const int NMAX = 1000;
const int LMAX = 26;
const int MOD = 104659;
int lista[LMAX][LMAX];
int dp[NMAX][LMAX];
int main()
{
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");
int n, m;
fin >> n >> m;
for(int i = 0; i < m; i++){
char a, b;
fin.get(a);
fin.get(a);
fin.get(b);
fin.get(b);
lista[a - 'a'][b - 'a'] = 1;
lista[b - 'a'][a - 'a'] = 1;
}
for(int i = 0; i < LMAX; i++){
dp[1][i] = 1;
}
for(int i = 2; i <= n; i++){
for(int j = 0; j < LMAX; j++){
for(int k = 0; k < LMAX; k++){
if(lista[j][k] == 0){
dp[i][j] = dp[i][j] + dp[i-1][k];
if(dp[i][j] >= MOD)
dp[i][j] -= MOD;
}
}
}
}
int rez = 0;
for(int i = 0; i < LMAX; i++){
rez = rez + dp[n][i];
if(rez >= MOD)
rez -= MOD;
}
fout << rez;
fin.close();
fout.close();
return 0;
}