#include <bits/stdc++.h>
#define N 100005
using namespace std;

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

char s[N];

int eval(char*& expr);
int operand(char*& expr);
int value(char*& expr);
int pm(char*& expr);
int od(char*& expr);

int eval(char*& expr){
    return pm(expr);
}

int pm(char*& expr){
    int result = od(expr);
    while(expr[0]=='-' || expr[0]=='+'){
        switch (expr[0]){
            case '-':
                result-=od(++expr);
                break;
            case '+':
                result+=od(++expr);
                break;
            default:
                break;
        }
    }
    return result;
}

int od(char*& expr){
    int result = operand(expr);
    while(expr[0]=='/' || expr[0]=='*'){
        switch (expr[0]){
            case '/':
                result/=operand(++expr);
                break;
            case '*':
                result*=operand(++expr);
                break;
            default:
                break;
        }
    }
    return result;
}

int value(char*& expr){
    int n = 0;
    while(isdigit(expr[0])){
        n = n*10 + (expr[0]-'0');
        expr++;
    }
    return n;
}

int operand(char*& expr){
    int result;
    if(expr[0]=='('){
        result = eval(++expr);
        expr++;
    }else{
        result = value(expr);
    }
    return result;
}

int main(){
    fin.get(s, N);
    char* expr = s;
    fout<<eval(expr);
    return 0;
}