#include <cstdio>

#define Lmax 100010

int Eval();
int Termen();
int Factor();

char S[Lmax], *p = S;

int Eval()
{
    int r = Termen();
    while (*p == '+' || *p == '-')
    {
        if (*p == '+')
        {
            p++;
            r += Termen();
        }
        else if (*p == '-')
        {
            p++;
            r -= Termen();
        }
    }
    return r;
}

int Termen()
{
    int r = Factor();
    while (*p == '*' || *p == '/')
    {
        if (*p == '*')
        {
            p++;
            r *= Factor();
        }
        else if (*p == '/')
        {
            p++;
            r /= Factor();
        }
    }
    return r;
}

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

int main()
{
    int Sol;

    freopen("evaluare.in", "r", stdin);
    freopen("evaluare.out", "w", stdout);

    scanf("%s", S);
    Sol = Eval();
    printf("%d", Sol);

    return 0;
}