#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;

}