Cod sursa(job #2836932)

Utilizator pifaDumitru Andrei Denis pifa Data 21 ianuarie 2022 10:46:52
Problema Bool Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 2.03 kb

#include <fstream>

using namespace std;

const int LE = 1000;
const int NOP = 100;
const int NL = 26;

char s[LE + 1], op[NOP + 1];
bool val[NL];
int p;

bool expresie();
bool termen();
bool factor();

void transforma() {
    int i, nr;
    i = nr = 0;
    while (s[i]) {
        if (s[i] == 'T' && s[i + 1] == 'R') {
            s[nr++] = '1';
            i += 4;
        }
        else if (s[i] == 'F' && s[i + 1] == 'A') {
            s[nr++] = '0';
            i += 5;
        }
        else if (s[i] == 'N' && s[i + 1] == 'O') {
            s[nr++] = '!';
            i += 3;
        }
        else if (s[i] == 'O' && s[i + 1] == 'R') {
            s[nr++] = '|';
            i += 2;
        }
        else if (s[i] == 'A' && s[i + 1] == 'N') {
            s[nr++] = '&';
            i += 3;
        }
        else if (s[i] != ' ')
            s[nr++] = s[i++];
        else
            ++i;
    }
    s[nr] = 0;
}

bool expresie() {
    bool sau = termen();
    while (s[p] == '|') {
        ++p;
        sau |= termen();
    }
    return sau;
}

bool termen() {
    bool shi = factor();
    while (s[p] == '&') {
        ++p;
        shi &= factor();
    }
    return shi;
}

bool factor() {
    bool nu = false, v;
    while (s[p] == '!') {
        nu = !nu;
        ++p;
    }
    if (s[p] == '(') {
        ++p;
        v = expresie();
        ++p;
        if (nu)
            return !v;
        return v;
    }
    if (s[p] == '1') {
        v = true;
        ++p;
    }
    else if (s[p] == '0') {
        v = false;
        ++p;
    }
    else
        v = val[s[p++] - 'A'];
    if (nu)
        return !v;
    return v;
}

int main() {
    ifstream in("bool.in");
    ofstream out("bool.out");

    int nop;
    in.getline(s, LE);
    transforma();
    in >> nop >> op;
    for (int i = 0; i < nop; ++i) {
        val[op[i] - 'A'] = (!val[op[i] - 'A']);
        p = 0;
        out << expresie();
    }

    in.close();
    out.close();
    return 0;
}