#include <fstream>
#include <cstring>
#define linemax 100005

using namespace std;

ifstream in("evaluare.in");
ofstream out("evaluare.out");

int n, pointer;
char line[linemax], curchar;

int suma(int,char);
int factor(int);
int produs(int,char);

void readnextchar()
{
    curchar = line[pointer];
    pointer++;
}

int suma(int answer, char op)
{
    int r = produs(1,'*');
    if(op == '+')
        answer+=r;
    else
        answer-=r;

    if(curchar == '+')
    {
        readnextchar();
        return suma(answer, '+');
    }
    else if(curchar == '-')
    {
        readnextchar();
        return suma(answer, '-');
    }
    else
        return answer;
}

int factor(int result)
{
    if(curchar == '(')
    {
        readnextchar();
        result = suma(0,'+');
        readnextchar();
        return result;
    }
    else if('0' <= curchar && curchar <= '9')
    {
        result = result * 10 + (curchar - '0');
        readnextchar();
        return factor(result);
    }
    else
        return result;
}

int produs(int answer, char op)
{
    int r = factor(0);
    if(op == '*')
        answer *= r;
    else
        answer /= r;

    if(curchar == '*')
    {
        readnextchar();
        return produs(answer, '*');
    }
    else if(curchar == '/')
    {
        readnextchar();
        return produs(answer, '/');
    }
    else
        return answer;
}

int main()
{
    in.getline(line, linemax);

    readnextchar();

    out << suma(0,'+');

    in.close();
    out.close();

    return 0;
}