Cod sursa(job #2674530)

Utilizator Alexandra_GheAlexandra Gheorghe Alexandra_Ghe Data 19 noiembrie 2020 16:34:19
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.91 kb
#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;

ifstream in("nrcuv.in");
ofstream out("nrcuv.out");
const int N=1001;
const int modul=104659;
int DP[N][26];
bool a[26][26];
int n,m;
char l1,l2;

int main()
{
    in>>n>>m;
    for(int i=1; i<=m; i++)
    {
        in>>l1>>l2;
        a[l1-'a'][l2-'a']=true;
        a[l2-'a'][l1-'a']=true;
    }
    int l='z'-'a';
    for(int i=0;i<=l;i++)
    {
        DP[1][i]=1;
    }
    int suma=0;
    for(int i=2;i<=n;i++)
    {
        for(int j=0;j<=l;j++)
        {
            for(int k=0;k<=l;k++)
            {
                if(!a[j][k])
                {
                    DP[i][j]+=DP[i-1][k];
                }
                DP[i][j]=DP[i][j]%modul;
            }
        }
    }
    for(int i=0;i<=l;i++)
    {
        suma+=DP[n][i];
        suma=suma%modul;
    }
 out<<suma;
    return 0;
}