Cod sursa(job #880114)

Utilizator vladstoickvladstoick vladstoick Data 16 februarie 2013 12:19:05
Problema Lista lui Andrei Scor 55
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.92 kb
#include<fstream>
using namespace std;
ifstream in("nrcuv.in");
ofstream out("nrcuv.out");
bool vf[30][30];
const long long R=104659;
long long a[1020][30];
int n , m;
int main()
{
    in>>n>>m;
    for(int i=1;i<=26;i++)
        a[1][i]=1;
    for(int i=1;i<=m;i++)
    {
        char x, y;
        in>>x>>y;
        vf[x-'a'+1][y-'a'+1]=true;
        vf[y-'a'+1][x-'a'+1]=true;
    }
    for(int i=1;i<=n-1;i++)
    {
        for(int j=1;j<=26;j++)
        {
            if(a[i][i]!=0)
            {
                for(int litnoua=1;litnoua<=26;litnoua++)
                {
                    if(vf[j][litnoua]==false)
                    {
                        a[i+1][litnoua]=(a[i+1][litnoua]+a[i][j])%R;
                    }
                }
            }
        }
    }
    long long suma=0;
    for(int i=1;i<=26;i++)
        suma=(suma+a[n][i])%R;
    out<<suma;
    return 0;
}