Cod sursa(job #2642528)

Utilizator stefantagaTaga Stefan stefantaga Data 15 august 2020 20:01:41
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.8 kb
#include <bits/stdc++.h>
#define MOD 104659
using namespace std;
ifstream f("nrcuv.in");
ofstream g("nrcuv.out");
int n,m,nr1,nr2,i,j,k,din[1005][28];
long long sum;
bool ok[28][28];
char x,y;
int main()
{
    f>>n>>m;
    for (i=1;i<=m;i++)
    {
        f>>x>>y;
        nr1=x-'a'+1;
        nr2=y-'a'+1;
        ok[nr1][nr2]=ok[nr2][nr1]=1;
    }
    for (i=1;i<=26;i++)
    {
        din[1][i]=1;
    }
    for (i=2;i<=n;i++)
    {
        for (j=1;j<=26;j++)
        {
            for (k=1;k<=26;k++)
            {
                if (ok[j][k]==0)
                {
                    din[i][j]=(din[i][j]+din[i-1][k])%MOD;
                }
            }
        }
    }
    for (i=1;i<=26;i++)
    {
        sum=(sum+din[n][i])%MOD;
    }
    g<<sum;
    return 0;
}