Cod sursa(job #1539716)

Utilizator theodor1289Theodor Amariucai theodor1289 Data 1 decembrie 2015 14:44:13
Problema Lista lui Andrei Scor 35
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.8 kb
#include <fstream>
#define MOD 104659
using namespace std;
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");
bool imposib[27][27];
unsigned int nrcuv[1001][27], inm[26];

int main()
{
    int n, m;
    char x, y;
    fin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        fin>>x>>y;
        imposib[x-'a'][y-'a']=imposib[y-'a'][x-'a']=1;
    }

    for(int i=0;i<26;i++)
        nrcuv[1][i]=1;
    nrcuv[1][26]=26;


        for(int k=0;k<26;k++)
        {
        for(int j=0;j<26;j++)
            if(!imposib[k][j])
                inm[k]++;
        }


    for(int i=2;i<=n;i++)
    {
        for(int k=0;k<26;k++)
            nrcuv[i][k]=(nrcuv[i-1][k]*inm[k])%MOD , nrcuv[i][26]=(nrcuv[i][26]+(nrcuv[i-1][k]*inm[k])%MOD)%MOD;

    }

    fout<<nrcuv[n][26];
    return 0;
}