#include <cstdio>
#include <cstring>
#include <cctype>

const int LMAX = 100005;

char input[LMAX];
char *p = input;

int eval_term();
int eval_factor();

int eval_exp() {
    int result = eval_term();

    while (strchr("+-", *p)) {
        if (*p == '+')
            p++, result += eval_term();
        else
            p++, result -= eval_term();
    }

    return result;
}

int eval_term() {
    int result = eval_factor();

    while (strchr("*/", *p)) {
        if (*p == '*')
            p++, result *= eval_term();
        else
            p++, result /= eval_term();
    }

    return result;
}

int eval_factor() {
    int result = 0;

    if (*p == '(')
        p++, result = eval_exp(), p++;
    else
        while (isdigit(*p))
            result = result * 10 + (*p - '0'), p++;

    return result;
}

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


    fgets(input, LMAX, stdin);
	printf("%d\n", eval_exp());

    return 0;
}