Pagini recente » Cod sursa (job #672854) | Cod sursa (job #2588856) | Cod sursa (job #2785264) | Cod sursa (job #462666) | Cod sursa (job #652131)
Cod sursa(job #652131)
#include<cstdio>
using namespace std;
int litOK[26][26], dp[1001][26];
//dp[i][j] = cate cuvinte de lungime i, care se termina cu a j-a litera pot forma
int main(){
freopen("nrcuv.in", "r", stdin), freopen("nrcuv.out", "w", stdout);
int n, m, i, j, k, sum;
char lit1, lit2;
scanf ("%d %d", &n, &m);
for (i = 0; i < 26; i++)
for (j = 0; j < 26; j++) litOK[i][j] = true;
for (i = 1; i <= m; i++){
do scanf("%c", &lit1);
while (!(lit1 >= 'a' && lit1 <= 'z'));
do scanf("%c", &lit2);
while (!(lit2 >= 'a' && lit2 <= 'z'));
litOK[lit1 - 'a'][lit2 - 'a'] = false;
litOK[lit2 - 'a'][lit1 - 'a'] = false;
}
for (i = 0; i < 26; i++) dp[1][i] = 1;
for (i = 2; i <= n; i++)
for (j = 0; j < 26; j++)
for (k = 0; k < 26; k++)
if (litOK[j][k]) dp[i][k] = (dp[i][k] + dp[i-1][j]) % 104659;
for (i = sum = 0; i < 26; i++) sum = (sum + dp[n][i]) % 104659;
printf("%d\n", sum);
return 0;
}