#include <bits/stdc++.h>

using namespace std;

const long MAX = 100005;
char S[MAX], *p = S;

ifstream f("evaluare.in");
ofstream g("evaluare.out");

long termen();
long factor();

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

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

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

int main() {
    f.getline(S, MAX);
    g << eval();
    f.close();
    g.close();
    return 0;
}