#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;
const int nmax = 100005;
const int lmax = 2;
char s[nmax];
char op[4][4] = {"+-", "*/", "^", ""};
int i, eval(int);

int operation(int a, int b, char c)
{
    if(c=='+') return a+b;
    if(c=='-') return a-b;
    if(c=='*') return a*b;
    if(c=='/') return a/b;
    return 0;
}

int number()
{
    int x=0;
    if(s[i]=='(')
    {
        i++;
        x=eval(0);
        i++;
    }
    else for(x=0; s[i]>='0' && s[i]<='9'; i++)
        x=x*10+(s[i]-'0');
    return x;
}

int eval(int level)
{
    int x;
    if(level==lmax) x=number();
    else x=eval(level+1);
    while(strchr(op[level], s[i]))
        x=operation(x, eval(level+1), s[++i-1]);
    return x;
}

int main()
{
    fgets(s, 100010, fopen("evaluare.in", "r"));
    fprintf(fopen("evaluare.out", "w"), "%d\n", eval(0));
    return 0;
}