#include <stdio.h>
#include <cstring>
#define nmax 100010
using namespace std;
int n,i;
char s[nmax];
int eval();
int termen();
int factor();
int factor()
{
    int x=0;
    if (s[i]=='(') {
        i++; x=eval(); i++;
    } else {
        while (i<=n && s[i]>='0' && s[i]<='9') {
            x=x*10+s[i]-48; i++;
        }
    }
    return x;
}
int termen()
{
    int x=factor();
    while (i<=n && (s[i]=='*' || s[i]=='/')) {
        switch (s[i]) {
            case '*':{ i++; x=x*factor(); break; }
            case '/':{ i++; x=x/factor(); break; }
        }
    }
    return x;
}
int eval()
{
    int x=termen();
    while (i<=n && (s[i]=='+' || s[i]=='-')) {
        switch (s[i]) {
            case '+':{ i++; x=x+termen(); break; }
            case '-':{ i++; x=x-termen(); break; }
        }
    }
    return x;
}
int main() {
freopen("evaluare.in","r",stdin);
freopen("evaluare.out","w",stdout);
gets(s+1); n=strlen(s+1); i=1;
printf("%d",eval());
return 0;
}