Cod sursa(job #604785)

Utilizator ion824Ion Ureche ion824 Data 25 iulie 2011 11:42:07
Problema Lista lui Andrei Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.84 kb
#include<fstream>
#define modulo 104659  
using namespace std;

bool ind[27][27];
int n,m,nr,a[1001][27];
char ch1,ch2;

int main(void){
    ifstream fin("nrcuv.in");
    ofstream fout("nrcuv.out");
    fin>>n>>m;
    for(int l=1;l<=m;++l){
                fin>>ch1>>ch2;
                ind[ch1-96][ch2-96]=true;
                ind[ch2-96][ch1-96]=true;
                }
    fin.close(); 
    for(int j=1;j<=26;++j) a[1][j]=1;
    for(int i=2;i<=n;++i)     
       for(int j=1;j<=26;++j){
               nr=0;
          for(int k=1;k<=26;++k)
          if(!ind[k][j])
                nr=(nr+a[i-1][k])%modulo;
        a[i][j]=nr;         
        }
        
    nr=0;
    for(int j=1;j<=26;++j) nr=(nr+a[n][j])%modulo;
    fout<<nr%modulo;
    fout.close();
return 0;
}