Cod sursa(job #644713)

Utilizator idomiralinIdomir Alin idomiralin Data 7 decembrie 2011 15:56:22
Problema Lista lui Andrei Scor 45
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.83 kb
# include <cstdio>

using namespace std;

int n, m, i, j, k, x, sum, viz[27][27], dp[1005][30]; 
char lit1, lit2;
int main()
{
    freopen("nrcuv.in","r",stdin);
    freopen("nrcuv.out","w",stdout);
    
    scanf("%d%d",&n,&m);
    for (i = 1; i <= m; i++)
    {
        scanf("%c",&lit1);
        scanf("%c %c",&lit1,&lit2);
        viz[lit1 - 'a' + 1][lit2 - 'a' + 1] = 1;
        viz[lit2 - 'a' + 1][lit1 - 'a' + 1] = 1;
        }
    
    for (i = 1; i <= 26; i++)
        dp[1][i] = 1;
    
    for (i = 1; i <= n - 1; i++)
        for (j = 1; j <= 26; j++)
            for (k = 1; k <= 26; k++)
            if (!viz[j][k])
            dp[i + 1][j] = (dp[i + 1][j] + dp[i][k]) % 104659;
            
    for (i = 1; i <= 26; i++)
        sum += dp[n][i]  % 104659;
        
    printf("%d",sum);

return 0;
}