Cod sursa(job #1418499)

Utilizator GinguIonutGinguIonut GinguIonut Data 13 aprilie 2015 12:36:27
Problema Lista lui Andrei Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.8 kb
#include <fstream>
#include <math.h>
#include <algorithm>
#include <iostream>
#define MOD 104659
using namespace std;
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");
char a,b;
int mat[27][27],i,n,m,pos[1001][27],j,t,sum;
int main()
{
    fin>>n>>m;
    for(i=1;i<=m;i++)
    {
        fin>>a>>b;
        mat[a-'a'+1][b-'a'+1]=1;
        mat[b-'a'+1][a-'a'+1]=1;
    }
    for(i=1;i<=26;i++)
        pos[1][i]=1;
    for(t=2;t<=n;t++)
    {
        for(i=1;i<=26;i++)
        {
            for(j=1;j<=26;j++)
            {
                if(mat[i][j]==0)
                {
                    pos[t][j]+=pos[t-1][i];
                    pos[t][j]%=MOD;
                }
            }
        }
    }
    for(i=1;i<=26;i++)
        sum+=pos[n][i],sum%=MOD;
    fout<<sum;
}