Cod sursa(job #2701430)

Utilizator alessiamtr12Mitrica Alessia alessiamtr12 Data 31 ianuarie 2021 10:56:53
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.74 kb
#include <fstream>
#define mod 104659
using namespace std;
ifstream fin("nrcuv.in");
ofstream fout("nrcuv.out");
bool c[30][30];
int dp[1001][30];
int n,m;
char a,b;
int main()
{
    fin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        fin>>a>>b;
        c[a-'a'][b-'a']=1;
        c[b-'a'][a-'a']=1;
    }
    for(int i=0;i<26;i++)
        dp[1][i]=1;
    for(int i=2;i<=n;i++)
    {
        for(int j=0;j<26;j++)
            for(int k=0;k<26;k++)
        {
            if(!c[j][k])
            {
                dp[i][j]+=dp[i-1][k];
                dp[i][j]%=mod;
            }
        }
    }
    int s=0;
    for(int i=0;i<26;i++)
    {
        s+=dp[n][i];
        s%=mod;
    }
    fout<<s;
    return 0;
}