Cod sursa(job #2086175)

Utilizator MatteusTanase Matei Matteus Data 11 decembrie 2017 16:41:14
Problema Lista lui Andrei Scor 50
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.79 kb
#include <fstream>
using namespace std;

ifstream cin ("nrcuv.in");
ofstream cout("nrcuv.out");

char v[2002], w[2002];
int a[30][30], d[30][1005];

int main()
{
    char c, l;
    int n, m, i, j, mod=104659, k;
    long long yup=0;
    cin>>n>>m;
    for(i=1; i<=m; i++)
    {
        cin>>c>>l;
        v[i]=c-'a';
        w[i]=l-'a';
        a[v[i]][w[i]] = a[w[i]][v[i]] = 1;
    }
    for(i=0; i<26; i++)
    {
        d[1][i]=1;
    }
    for(i=2; i<=n; i++)
    {
        for(j=0; j<26; j++)
        {
            for(k=0; k<26; k++)
                if(!a[k][j])
                {
                    d[i][j]+=d[i-1][k];
                    d[i][j]%=mod;
                }
        }
    }

    for(i=0; i<26; i++)
    {

        yup+=d[n][i];
        yup%=mod;
    }
    cout<<yup;

    return 0;
}