Cod sursa(job #2857600)

Utilizator AdrianRosuRosu Adrian Andrei AdrianRosu Data 25 februarie 2022 22:03:59
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 fin("nrcuv.in");
ofstream fout("nrcuv.out");
long long n,m,i,j,k,sol,d[1001][26];
char x,y;
bool a[26][26];
int main(void){
    fin>>n>>m;
   for(i=1;i<=m;i++){
        fin>>x>>y;
        a[x-'a'][y-'a']=1;
        a[y-'a'][x-'a']=1;
    }
    for (i=0;i<26;i++)
        d[1][i]=1;
    for(i=2;i<=n;i++){
        for(j=0;j<26;j++){
            for(k=0;k<26;k++){
                if(!a[k][j]){
                    d[i][j]+=d[i-1][k];
                    d[i][j]%=MOD;
                }
            }
        }
    }
    for(i=0;i<26;i++){
        sol+=d[n][i];
        sol%=MOD;
}
    fout<<sol;
    return 0;
}