#include<fstream>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char s[100001];
int i;
int expresie();
int factor();
int termen();
int expresie(){
    int r=termen();
    while(s[i]=='+' || s[i]=='-')
        if(s[i]=='+')++i,r+=termen();
        else ++i,r-=termen();
    return r;
}
int termen(){
    int 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()
{
    f>>s;
    i=0;
    g<<expresie();
    return 0;
}