#include <bits/stdc++.h>
#define N 100005
using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");
int expresie();
int termen();
int factor();
int n,i,j,x;
char s[N];
bool nr(int x)
{
    return ('0'<=s[x] && s[x]<='9');
}
int main()
{
    fin>>s;
    n=strlen(s);
    fout<<expresie();
    return 0;
}
int expresie()
{
    int x=termen();
    while(i<n && (s[i]=='+' || s[i]=='-'))
    {
        if(s[i]=='+') {i++; x+=termen();}
        else if(s[i]=='-') {i++; x-=termen();}
    }
    return x;
}
int termen()
{
    int x=factor();
    while(i<n && (s[i]=='*' || s[i]=='/'))
    {
        if(s[i]=='*') {i++; x*=factor();}
        else if(s[i]=='/') {i++; x/=factor();}
    }
    return x;
}
int factor()
{
    int x=0;
    if(s[i]=='(')
    {
        i++;
        x=expresie();
        i++;
    }
    else
    {
        while(nr(i))
        {
            x=x*10+s[i]-'0';
            i++;
        }
    }
    return x;
}