Pagini recente » Cod sursa (job #3256055) | Cod sursa (job #1690327) | Cod sursa (job #2881061) | Cod sursa (job #2928606) | Cod sursa (job #3281989)
#include <bits/stdc++.h>
#define mod 104659
using namespace std;
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");
int comp[27][27];
int n,m;
int dp[27][1002];
int main()
{
char a,b;
int i,j,q,suma=0;
fin>>n>>m;
for(i=1;i<=m;i++)
{
fin>>a>>b;
comp[a-'a'][b-'a']=comp[b-'a'][a-'a']=1;
}
for(i=0;i<26;i++)
dp[i][1]=1;
for(j=2;j<=n;j++)
{
for(i=0;i<26;i++)
for(q=0;q<26;q++)
if(comp[i][q]==0)
dp[i][j]=(dp[i][j]+dp[q][j-1])%mod;
}
for(i=0;i<26;i++)
suma=(suma+dp[i][n])%mod;
fout<<suma;
return 0;
}