Cod sursa(job #2114615)

Utilizator LauraNaduLaura Nadu LauraNadu Data 25 ianuarie 2018 18:05:20
Problema Lista lui Andrei Scor 45
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.92 kb
#include<fstream>
using namespace std;
ifstream f("nrcuv.in");
ofstream g("nrcuv.out");
int n, sol, m, viz[30][30], fr[30], nr[1008][30];
char a, b;
int main()
{
    f>>n>>m;
    for(int i=1;i<=m;i++)
    {
        f>>a>>b;

        viz[a-'a'][b-'a']=viz[b-'a'][a-'a']=1;
    }
    /*sol=1;
    for(int i=1;i<=n;i++)
    {
        for(int j=0;j<26;j++)
            sol=(sol*(26-fr[j]))%104659;
    }*/
    for(int k=1;k<=n;k++)
    {
        for(int i=0;i<26;i++)
        {
            if(k==1)
                nr[k][i]=1;
            else
            {
                for(int j=0;j<26;j++)
                    if(viz[i][j]==0)
                    {
                        nr[k][i]+=nr[k-1][j];
                        nr[k][i]%=104659;
                    }
            }
        }
    }
    for(int j=0;j<26;j++)
    {
        sol+=nr[n][j];
        sol%104659;
    }
    g<<sol;
    return 0;
}