#include <fstream>
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int i;
char s[100010];
int expresie(),termen(),factor();
int expresie() {
	int r;
	r=termen();
	while (s[i]=='+'||s[i]=='-') {
		if (s[i]=='+') {
			i++;
			r+=termen();
		}
		else {
			i++;
			r-=termen();
		}
	}
	return r;
}
int termen() {
	int r;
	r=factor();
	while (s[i]=='*'||s[i]=='/') {
		if (s[i]=='*') {
			i++;
			r*=factor();
		}
		else {
			i++;
			r/=factor();
		}
	}
	return r;
}
int factor() {
	int r;
	if (s[i]=='(') {
		i++;
		r=expresie();
		i++;
	}
	else {
		r=0;
		while (s[i]>='0'&&s[i]<='9') {
			r=r*10+(s[i]-'0');
			i++;
		}
	}
	return r;
}
int main() {
	fin>>s;
	i=0;
	fout<<expresie();
}