Cod sursa(job #2704062)

Utilizator costea_dariaCostea Daria Ioana costea_daria Data 9 februarie 2021 18:30:29
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.84 kb
#include <fstream>

using namespace std;

ifstream cin("nrcuv.in");
ofstream cout("nrcuv.out");

const int N=1005,NL=30;
int dp[N][NL];
bool inco[NL][NL];
int mod=104659;

int main()
{
    int n,m,s=0;
    cin>>n>>m;
    for(int i=0; i<m; i++)
    {
        char x,y;
        cin>>x>>y;
        inco[x-'a'][y-'a']=inco[y-'a'][x-'a']=true;
    }
    for(int j=0; j<26; j++)
    {
        dp[1][j]=1;
    }
    for(int i=2; i<=n; i++)
    {
        for(int j=0; j<26; j++)
        {
            for(int k=0; k<26; k++)
            {
                if(!inco[j][k])
                {
                    dp[i][j]+=dp[i-1][k];
                    dp[i][j] %= mod;
                }
            }
        }
    }
    for(int j=0; j<26; j++)
    {
        s+=dp[n][j];
        s %= mod;
    }
    cout<<s;
    return 0;
}