Cod sursa(job #2608840)

Utilizator Albert_GAlbert G Albert_G Data 1 mai 2020 19:46:30
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.91 kb
#include <fstream>

using namespace std;

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

int nrcuv[26][1001];
bool a[26][26];
const int mod = 104659;

void initializare()
{
    for(int i=0;i<26;i++)
    {
        nrcuv[i][1]=1;
    }
}

int main()
{
    int l,m,cnt=0;
    in>>l>>m;
    char x,y;
    for(int i=0;i<m;i++)
    {
        in>>x>>y;
        int nr=x-'a',nr2=y-'a';
        a[nr][nr2]=1;
        a[nr2][nr]=1;
    }
    initializare();
    for(int i=2;i<=l;i++)
    {
        for(int j=0;j<26;j++)
        {
            for(int k=0;k<26;k++)
            {
                if(!a[j][k])
                {
                    nrcuv[j][i]=( nrcuv[j][i] + nrcuv[k][i-1])%mod;
                }
            }
        }
    }
    long long rez=0;
    for(int i=0;i<26;i++)
        {
            rez=( rez + nrcuv[i][l])%mod;
        }
    out<<rez;
    return 0;
}