#include <fstream>
#include <cstring>

using namespace std;
ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

int i, t;
char s[100001];
int expresie();
int factor();
int termen();


int main()
{
    fin.getline(s, 100001);
    fout<<expresie();

    return 0;
}

int expresie()
{int t=termen();

    while(s[i]=='+' || s[i]=='-')
        if(s[i]=='+')
           {i++; t+=termen();}
        else {i++; t-=termen();}
    return t;
}
int termen()
{int t=factor();

    while(s[i]=='*'||s[i]=='/')
        if(s[i]=='*')
            {i++; t*=factor();}
        else {i++; t/=factor();}
    return t;
}
int factor()
{int t=0;

    if(s[i]=='(')
        {i++; t=expresie(); i++;}
    else while(s[i]>='0' && s[i]<='9')
            {t=t*10+s[i]-'0'; i++;}
    return t;

}