Cod sursa(job #1164579)

Utilizator EpictetStamatin Cristian Epictet Data 2 aprilie 2014 10:14:54
Problema Lista lui Andrei Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.59 kb
#include<fstream>
#define MOD 104659
using namespace std;
ifstream f("nrcuv.in");
ofstream g("nrcuv.out");
int s,n,m,a[30][30],dp[1009][30];
int main()
{
	char x,y;
	f >> n >> m;
	for(int i=1;i<=m;i++)
	{
		f >> x >> y;
		a[x-'a'+1][y-'a'+1] = a[y-'a'+1][x-'a'+1] = 1;
	}
	for(int i=1; i<=26; i++) dp[1][i]=1;
	for(int i=2; i<=n; i++)
	{
		for(int j=1; j<=26; j++)
		{
			for(int k=1; k<=26; k++)
			{
				if(a[k][j]==0)
					dp[i][j] = (dp[i][j]+dp[i-1][k]) % MOD;
			}
		}
	}
	for(int i=1; i<=26; i++)
		s=(s+dp[n][i])%MOD;
	
	g << s << '\n';
	g.close();
	return 0;
}