Cod sursa(job #2117128)

Utilizator DovlecelBostan Andrei Dovlecel Data 28 ianuarie 2018 16:27:55
Problema Lista lui Andrei Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.71 kb
#include <fstream>
#include <iostream>
using namespace std;
ifstream in("nrcuv.in");
ofstream out("nrcuv.out");
int a[27][27],n,m;
long long nrcuv[1001][27],s;
const int MOD=104659;
int main()
{
    int i,xi,yi,j,k;
    char x,y;
    in>>n>>m;
    for(i=1;i<=m;i++)
    {
        in>>x>>y;
        xi=x-'a'+1;
        yi=y-'a'+1;
        a[xi][yi]=1;
        a[yi][xi]=1;
    }
    for(i=1;i<=26;i++)
        nrcuv[1][i]=1;
    for(i=2;i<=n;i++)
    {
        for(j=1;j<=26;j++)
            for(k=1;k<=26;k++)
                if(a[j][k]==0)
                    nrcuv[i][j]=(nrcuv[i][j]+nrcuv[i-1][k])%MOD;
    }
    for(i=1;i<=26;i++)
        s=(s+nrcuv[n][i])%MOD;
    out<<s;
    return 0;
}