Cod sursa(job #2704267)

Utilizator AlinaFloreaFlorea Alina AlinaFlorea Data 10 februarie 2021 09:15:39
Problema Lista lui Andrei Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.7 kb
#include <bits/stdc++.h>
#define MOD 104659
using namespace std;
ifstream f("nrcuv.in");
ofstream g("nrcuv.out");
int n, m, a[30][30], b[2005][2005];
long long key;
int main()
{
    f>>n>>m;
    for(int i=1; i<=m; i++){
        char x,y;
        f>>x>>y;
        a[x-'a'][y-'a']=1;
        a[y-'a'][x-'a']=1;
    }
    for(int i=0; i<26; i++)
        b[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(!a[j][k]){
                    b[i][j]+=b[i-1][k];
                    b[i][j]%=MOD;
                }
        }
    }
    for(int i=0; i<26; i++)
        key+=b[n][i];
    g<<key%MOD;
    return 0;
}