#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cctype>
#include <string>
#include <algorithm>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <stack>
#include <cassert>
using namespace std;

#define PRO "evaluare"
void OpenFiles(int EVAL)
{
	if(EVAL)
	{
		char input[100] = PRO, output[100] = PRO;
		freopen(strcat(input, ".in"),"r",stdin);
		freopen(strcat(output,".out"),"w",stdout);
	} else
	{
		freopen("test.in","r",stdin);
		freopen("test.out","w",stdout);
	}
}

#define MAX 100001
#define INF 0xffffff

char *b,a[MAX];

int Eval();
int Termen();
int Factor();

int Termen()
{
	int r=0;
	if(*b=='(')
	{
		b++;
		r=Eval();
		b++;
	} else
	{
		while(isdigit(*b))
		{
			r=r*10+*b-'0';
			b++;
		}
	}
	return r;
}

int Factor()
{
	int r=Termen();
	while(*b=='*'|| *b=='/')
	{
		if(*b=='*')
		{
			b++;
			r*=Termen();
		}
		if(*b=='/')
		{
			b++;
			r/=Termen();
		}
	}
	return r;
}

int Eval()
{
	int r=Factor();
	while(*b=='+' || *b=='-')
	{
		if(*b=='+')
		{
			b++;
			r+=Factor();
		}
		if(*b=='-')
		{
			b++;
			r-=Factor();
		}
	}
	return r;
}

int main(int argv,char *args[])
{
	OpenFiles(argv==0);
	// start
		scanf("%s ",a);
		b=a;
		printf("%d\n",Eval());
		return 0;
}