#include <cstdio>

using namespace std;

#define DIM 100005

char expresie[DIM], *p;

int eval();
int termen();
int factor();

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

    scanf("%s\n", expresie);

    p = expresie;

    printf("%d\n", eval());

    return 0;
}

int eval() {
    int r = termen();

    while( *p == '+' || *p == '-') {
        if(*p == '+') {
            ++p;
            r += termen();
        }
        else {
            ++p;
            r -= termen();
        }
    }

    return r;
}

int termen() {
    int r = factor();

    while(*p == '*' || *p == '/') {
        if(*p == '*') {
            ++p;
            r *= factor();
        }
        else {
            ++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;
}