Cod sursa(job #2591229)

Utilizator adimiclaus15Miclaus Adrian Stefan adimiclaus15 Data 30 martie 2020 01:05:45
Problema NFA Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.49 kb
#include <bits/stdc++.h>
using namespace std;

ifstream f("nfa.in");
ofstream g("nfa.out");

const int SIGMA=26;
const int NMAX=305;
int n,k,x,y,m,start,q;
char c;
bool stari_finale[NMAX],use[NMAX];
int tranzitii[NMAX][SIGMA][NMAX];

bool nfa(string s)
{
    int current[NMAX];
    int sz_current=0;
    current[++sz_current]=start;
    for(unsigned int i=0;i<s.size();i++)
    {
        int next[NMAX];
        int sz_next=0;
        int lit=s[i]-'a';
        for(int j=1;j<=sz_current;j++)
        {
            for(int k=1;k<=tranzitii[current[j]][lit][0];k++)
            {
                if(!use[tranzitii[current[j]][lit][k]])
                {
                    next[++sz_next]=tranzitii[current[j]][lit][k];
                    use[tranzitii[current[j]][lit][k]]=1;
                }
            }
        }
        sz_current=0;
        for(int j=1;j<=sz_next;j++)
        {
            use[next[j]]=0;
            current[++sz_current]=next[j];
        }
    }
    for(int i=1;i<=sz_current;i++)
    {
        if(stari_finale[current[i]])
            return 1;
    }
    return 0;
}
int main()
{
    f>>n>>m>>k;
    f>>start;
    for(int i=1;i<=k;i++)
    {
        f>>x;
        stari_finale[x]=1;
    }
    while(m--)
    {
        f>>x>>y>>c;
        int lit=c-'a';
        tranzitii[x][lit][++tranzitii[x][lit][0]]=y;
    }
    f>>q;
    while(q--)
    {
        string cuv;
        f>>cuv;
        g<<nfa(cuv)<<"\n";
    }
    return 0;
}