Cod sursa(job #2476925)

Utilizator TheIceManmates dragos TheIceMan Data 19 octombrie 2019 12:38:29
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.76 kb
#include <bits/stdc++.h>
#define NMAX 1005
#define CMAX 150
#define MOD 104659;

using namespace std;
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");
int dp[NMAX][CMAX],i, n,k, mat[CMAX][CMAX];
int main()
{
    fin>>n>>k;
    for(i=1;i<=k;i++)
    {
        char a,b;
        fin>>a>>b;
        mat[a][b]=mat[b][a]=1;
    }
    for(i='a';i<='z'; i++)
        dp[1][i]=1;
    for(i=2;i<=n;i++)
        for(int a='a' ;a<='z';a++)
            for(int b = 'a';b<='z';b++)
                if(mat[a][b]==0)
                {
                    dp[i][b]+=dp[i-1][a];
                    dp[i][b]%=MOD;
                }


    int ans=0;
    for(int i='a';i<='z';i++)
    {
        ans+=dp[n][i];
        ans%=MOD;
    }
    fout<<ans<<'\n';
}