Cod sursa(job #2851089)

Utilizator RaresVilcuVilcu Rares Andrei RaresVilcu Data 18 februarie 2022 08:51:45
Problema Bool Scor 40
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.53 kb
#include <bits/stdc++.h>
using namespace std;

ifstream fin("bool.in");
ofstream fout("bool.out");

char s[1006], c, t[1006], *p;
bool val[40];
int n, i;

bool eval();
bool termen();
bool factor();

void citire()
{
    fin.getline(t, 1006);
    fin >> n;
    fin.get();
}

bool eval()
{
    bool r;
    r = termen();
    while (s[i] == 'O' && s[i+1] == 'R')
    {
        i += 2;
        r |= termen();
    }
    return r;
}

bool termen()
{
    bool r;
    r = factor();
    while (s[i] == 'A' && s[i+1] == 'N' && s[i+2] == 'D')
    {
        i += 3;
        r &= factor();
    }
    return r;
}

bool factor()
{
    bool r = 0;
    if (s[i] == 'N' && s[i+1] == 'O' && s[i+2] == 'T')
    {
        i += 3;
        r =! factor();
    }
    else if (s[i] == '(')
    {
        ++i;
        r = eval();
        ++i;
    }
    else if (isalpha(s[i]))
    {
        r = val[s[i]-'A'];
        ++i;
    }
    else if (s[i] == 'T' && s[i+1] == 'R' && s[i+2] == 'U' && s[i+3] == 'E')
    {
        i += 4;
        r = true;
    }
    else if (s[i] == 'F' && s[i+1] == 'A' && s[i+2] == 'L' && s[i+3] == 'S' && s[i+4] == 'E')
    {
        i += 5;
        r = false;
    }
    return r;
}

int main()
{
    citire();
    p = t;
    p = strtok(t, " ");
    while(p)
    {
        strcat(s, p);
        p = strtok(NULL, " ");
    }
    for (int k = 1; k <= n; ++k)
    {
        i = 0;
        fin >> c;
        val[c-'A'] = !val[c-'A'];
        fout << eval();
    }
    return 0;
}