Cod sursa(job #275151)

Utilizator EllsolanMircea Iordache Ellsolan Data 10 martie 2009 11:34:54
Problema Bool Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.44 kb
#include <fstream>
#include <cstring>
using namespace std;
char temp[2000], edit[2000];
long i,n;
bool A['z'-'a'+2];

bool ev1();
bool ev2();
void filter()
{
    unsigned int n=0;
    for (i=0;i<=temp[i]!='\n';i++)
    if (temp[i]!=' ') edit[n++]=temp[i];
}

bool eval()
{
    bool mem=ev1();
    while ( strncmp(i+edit, "OR", 2)==0)
    {
        i+=2;
        mem |= ev1();
    }
    return mem;
}

bool ev1()
{
    bool mem=ev2();
    while (strncmp(i+edit, "AND", 3)==0)
    {
        i+=3;
        mem&=ev2();
    }
    return mem;
}

bool ev2()
{
    bool mem;
    if (strncmp(i+edit, "TRUE", 4)==0)
    {
        i+=4;
        return true;
    }
    if (strncmp(i+edit, "FALSE", 5)==0)
    {
        i+=5;
        return false;
    }
    if (strncmp (i+edit, "NOT", 3)==0)
    {
        i+=3;
        mem=!ev2();
    }
    else
    {
        if (edit[i]=='(')
        {
            i++;
            mem=eval();
            i++;
        }
        else
            mem=A[edit[i++]-'A'];
    }
    return mem;
}

int main()
{
    ifstream in ("bool.in");
    ofstream out("bool.out");
    char c;
    for (i=0;i<=2000;i++)
    {in>>temp[i]; if (temp[i]=='\n') break;};
    filter();
    for (i=0;i<='z'-'a'+1;i++)
    A[i]= false;
    in>>n;
    in>>c;
    while (n--)
    {
        in>>c;
        A[c-'A']=!A[c-'A'];
        i=0;
        out<<(eval()?1:0);
    }
    return 0;
}