Cod sursa(job #2087656)

Utilizator dumitrescu_andreiDumitrescu Andrei dumitrescu_andrei Data 13 decembrie 2017 22:04:07
Problema Lista lui Andrei Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.63 kb
#include <bits/stdc++.h>

using namespace std;

ifstream f("nrcuv.in");
ofstream g("nrcuv.out");
int n,m;
long long s,b[30][1001];
bool c[30][30];
const int MOD=104659;

int main()
{
    f>>n>>m;
    for(int i=1;i<=m;++i)
    {
        char a,b;
        f>>a>>b;
        c[a-'a'][b-'a']=c[b-'a'][a-'a']=1;
    }

    for(int i=0;i<26;++i)
        b[i][1]=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])
        {
            b[j][i]=(b[j][i]+b[k][i-1])%MOD;
        }
    for(int i=0;i<26;++i)
        s=(s+b[i][n])%MOD;
    g<<s;
    return 0;
}