#include <bits/stdc++.h>

using namespace std;
ifstream fin ("evaluare.in");
ofstream fout ("evaluare.out");
char sir[100009];int n,p;
int termen () ;
int factor ();

int eval () {
	int r=termen();
	while(sir[p]=='+' || sir[p]=='-') {
		if(sir[p]=='+') 
			++p,r+=termen();
		else
			++p,r-=termen();
	}
	return r;
}
int termen () {
	int r=factor();
	while(sir[p]=='*' || sir[p]=='/') {
		if(sir[p]=='*')
			++p,r*=factor();
		else
			++p,r/=factor();
	}
	return r;
}
int factor () {
	int r=0;
	if(sir[p]=='(') {
		++p;r=eval();
		++p;
	}
	else {
		while(sir[p]>='0' && sir[p]<='9')
			r=r*10+sir[p]-'0',++p;
	}
	return r;
}

int main () {
	fin.getline(sir+1,100005);p=1;n=strlen(sir+1);
	fout<<eval();
	return 0;
}