#include <bits/stdc++.h>

#define DIM 100000

using namespace std;

ifstream f("evaluare.in");
ofstream g("evaluare.out");

int n;
char s[DIM+5];
int idx;

int expresie();
int termen();
int factor();

int expresie(){

    int r = termen();
    while(s[idx] == '+' || s[idx] == '-'){

        if(s[idx] == '+'){
            idx++;
            r += termen();
        }else{
            idx++;
            r -= termen();
        }
    }

    return r;
}

int termen(){

    int r = factor();
    while(s[idx] == '*' || s[idx] == '/'){

        if(s[idx] == '*'){
            idx++;
            r *= factor();
        }else{
            idx++;
            r /= factor();
        }
    }

    return r;
}

int factor(){

    int r;

    if(s[idx] == '('){
        idx++;
        r = expresie();
        idx++;
    }else{
        r = 0;
        while('0' <= s[idx] && s[idx] <= '9'){
            r = r*10 + s[idx]-'0';
            idx++;
        }
    }

    return r;
}

int main()
{
    f>>(s+1);
    n = strlen(s+1);

    idx = 1;
    g<<expresie();
    return 0;
}