Cod sursa(job #2847612)

Utilizator CelestinNegraru Celestin Celestin Data 11 februarie 2022 09:09:13
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.01 kb
#include <iostream>
#include <fstream>
#define maxi 1005
#define nmax 30
#define mod 104659
using namespace std;
ifstream f;
ofstream g;
int dp[maxi][nmax],n,m,ans;
bool nosepuerte[nmax][nmax];
void read()
{
    char c1,c2;
    f.open("nrcuv.in",ios::in);
    f>>n>>m;
    for(int i=1;i<=m;i+=1)
    {
        f>>c1>>c2;
        nosepuerte[(int)(c1-96)][(int)(c2-96)]=nosepuerte[(int)(c2-96)][(int)(c1-96)]=true;
    }
    f.close();
    return;
}
int dinamica()
{
    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(!nosepuerte[j][k])
                {
                    dp[i][j]=(dp[i][j]+dp[i-1][k])%mod;
                }
            }
        }
    }
    for(int i=1;i<=26;i++)
        ans=(ans+dp[n][i])%mod;
    return ans;
}
int main()
{
    g.open("nrcuv.out",ios::out);
    read();
    g<<dinamica();
    g.close();
    return 0;
}