Cod sursa(job #1599056)

Utilizator TibixbAndrei Tiberiu Tibixb Data 13 februarie 2016 16:16:55
Problema Lista lui Andrei Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.65 kb
#include<fstream>
#define mod 104659
using namespace std;
int n, m, D[1002][27], sol, i, j, k;
char x, y;
bool u[27][27];
ifstream in("nrcuv.in");
ofstream out("nrcuv.out");
int main()
{
    in>>n>>m;
    for(i=1; i<=m; i++)
    {
        in>>x>>y;
        u[x-'a'][y-'a']=1;
        u[y-'a'][x-'a']=1;
    }
    for(i=0; i<=25; i++)
        D[1][i]=1;
    for(i=2; i<=n; i++)
    {
        for(j=0; j<=25; j++)
        {
            for(k=0; k<=25; k++)
                if(u[j][k]==0)
                    D[i][k]=(D[i][k]+D[i-1][j])%mod;
        }
    }
    for(i=0; i<=25; i++)
        sol+=D[n][i];
    out<<sol%mod;
    return 0;
}