#include <cstdio>
#include <cstring>
using namespace std;

char buffer[100050];
int id,len;

int numar();
int suma();
int prod();

int prod() {
    int r1,r2;
    r1 = numar();
    while (buffer[id] == '*' || buffer[id] == '/') {
        if (buffer[id] == '*') {
            id++;
            r2 = numar();
            r1 *= r2;
        } else if (buffer[id] == '/') {
            id++;
            r2 = numar();
            r1 /= r2;
        }
    }
    return r1;
}

int suma() {
    int r1,r2;
    r1 = prod();
    while (buffer[id] == '+' || buffer[id] == '-') {
        if (buffer[id] == '+') {
            id++;
            r2 = prod();
            r1 += r2;
        } else if (buffer[id] == '-') {
            id++;
            r2 = prod();
            r1 -= r2;
        }
    }
    return r1;
}

int numar() {
    int r = 0;
    if (buffer[id] == '(') {
        id++;
        r = suma();
        id++;
    } else while ('0' <= buffer[id] && buffer[id] <= '9') {
        r = 10*r + buffer[id++] - '0';
    }
    return r;
}

int main() {
    freopen("evaluare.in","r",stdin);
    freopen("evaluare.out","w",stdout);
    scanf("%s",buffer);
    len = strlen(buffer);
    printf("%d\n",suma());
    return 0;
}