#include <cstdio>

#define MAX 100050

using namespace std;

char sir[MAX], *p;

void citire()
{
    freopen("evaluare.in", "r", stdin);
    gets(sir);
    p = sir;
    fclose(stdout);
}

int factor();
int termen();

int eval()
{
    int r = factor();
    while(*p == '+' || *p == '-')
    {
        switch(*p)
        {
        case '+':
            p++;
            r += factor();
            break;
        case '-':
            p++;
            r -= factor();
            break;
        }
    }
    return r;
}

int factor()
{
    int r = termen();
    while(*p == '*' || *p == '/')
    {
        switch(*p)
        {
        case '*':
            p++;
            r *= termen();
            break;
        case '/':
            p++;
            r /= termen();
            break;
        }
    }
    return r;
}

int termen()
{
    int r = 0;
    if(*p == '(')
    {
        p++;
        r = eval();
        p++;
    }
    else
    {
        while(*p >= '0' && *p <= '9')
        {
            r = r * 10 + *p - '0';
            p++;
        }
    }
    return r;
}

void afisare()
{
    freopen("evaluare.out", "w", stdout);
    printf("%d", eval());
    fclose(stdout);
}

int main()
{
    citire();
    afisare();
    return 0;
}