#include <fstream>
using namespace std;
ifstream cin("evaluare.in");
ofstream cout("evaluare.out");
int p;
char v[100010];
int termen();
int factor();
int expresie() {
    int aux=termen();
    while(v[p]=='+'||v[p]=='-') {
        if(v[p]=='+'){
            p++;
            aux+=termen();
        }
        else {
            p++;
            aux-=termen();
        }
    }
    return aux;
}
int termen() {
    int aux=factor();
    while(v[p]=='/'||v[p]=='*') {
        if(v[p]=='/'){
            p++;
            aux/=factor();
        }
        else {
            p++;
            aux*=factor();
        }
    }
    return aux;
}
int factor() {
    int aux=0;
    if(v[p]=='('){
        p++;
        aux=expresie();
        p++;
    }
    else {
        aux=0;
        while(v[p]>='0'&&v[p]<='9'){
            aux*=10;
            aux+=v[p]-'0';
            p++;
        }
    }
    return aux;
}
int main() {
    cin>>v;
    p=0;
    cout<<expresie();
}