#include <cstdio>

const long MAX = 100010;
char S[MAX], *p=S;

long termen();
long factor();


long eval() {
 long r = termen();
 while ( *p=='+' || *p=='-' ) {
  switch ( *p ) {
   case '+':
    ++p;
    r += termen();
    break;
   case '-':
    ++p;
    r -= termen();
    break;
  }
 }
 return r;
}

long termen() {
 long r = factor();
 while ( *p=='*' || *p=='/' ) {
  switch ( *p ) {
   case '*' :
    ++p;
    r *= factor();
    break;
   case '/':
    ++p;
    r /= factor();
    break;
  }
 }
 return r;
}


long factor() {
    long r=0;
    if ( *p == '(' ) {
        ++p;
  r = eval();
  ++p;
    } else {
        while ( *p>='0' && *p<='9' ) {
            r = r*10 + *p - '0';
   ++p;
  }
    }
    return r;
}

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