Cod sursa(job #2849349)

Utilizator MihaiCostacheCostache Mihai MihaiCostache Data 14 februarie 2022 22:23:34
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.77 kb
#include <fstream>
#define MOD 104659
using namespace std;
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");
int n, m, a[30][30], sol;
int dp[1001][27];
char x, y;
int main()
{
    fin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        fin>>x>>y;
        a[x-'a'+1][y-'a'+1]=1;
        a[y-'a'+1][x-'a'+1]=1;
    }
    for(int i=1;i<=26;i++)
        dp[1][i]=1;
    for(int i=2;i<=n;i++)
    {
        for(int j=1;j<=26;j++)
        {
            for(int k=1;k<=26;k++)
            {
                if(a[j][k]==0)
                {
                    dp[i][j]=(dp[i][j]+dp[i-1][k])%MOD;
                }
            }
        }
    }
    for(int i=1;i<=26;i++)
    {
        sol=(sol+dp[n][i])%MOD;
    }
    fout<<sol%104659;
    return 0;
}