Cod sursa(job #3306942)

Utilizator anca.gdDumitru Anca Gabriela anca.gd Data 15 august 2025 13:24:34
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.7 kb
#include <fstream>
using namespace std;
ifstream cin("nrcuv.in");
ofstream cout("nrcuv.out");
int n,m;
bool mat[30][30];
int c[1005][30];
int mod=104659;
int main()
{
    cin>>n>>m;
    char a,b;
    while(m--){
        cin>>a>>b;
        mat[(a-'a')+1][(b-'a')+1]=1;
        mat[(b-'a')+1][(a-'a')+1]=1;
    }
    for(int a=1; a<=26; a++)
         c[1][a]=1;
    for(int i=2; i<=n;i++)
        for(int a=1; a<=26; a++)
            for(int b=1; b<=26;b++)
                if(!mat[a][b]){
                    c[i][a]+=c[i-1][b];
                    c[i][a]%=mod;
                }
    int ans=0;
    for(int a=1; a<=26; a++)
        ans+=c[n][a];
    cout<<ans%mod;
    return 0;
}