#include <stdio.h>
#include <ctype.h>

FILE *fin, *fout;

 // returneaza rezulatul calcului pana la un ')' sau pana la '\n'
int rezCalc() {
  int ch = fgetc( fin ), sum = 1, rez = 0, p = 1, x, up = '*';

  while ( ch != ')' && ch != '\n' ) {
    if ( ch == '+' || ch == '-' )
      p = ch == '+' ? 1 : -1;
    if ( ch == '+' || ch == '-' || ch == '*' || ch == '/' ) {
      up = ch == '/' ? '/' : '*';
      ch = fgetc( fin );
    }
    if ( ch == '(' ) {
      x = rezCalc();
      sum = up == '*' ? sum * x : sum / x;
      ch = fgetc( fin );
    } else {
      x = 0;
      do
        x = x * 10 + ch - '0';
      while ( isdigit( ch = fgetc( fin ) ) );

      sum = up == '*' ? sum * x : sum / x;
    }

    if ( ch != '*' && ch != '/' ) {
      rez += sum * p;
      sum = 1;
    }
  }

  return rez;
}
int main() {
  fin = fopen( "evaluare.in", "r" );
  fout = fopen( "evaluare.out", "w" );

  fprintf( fout, "%d\n", rezCalc() );

  fclose( fin );
  fclose( fout );

  return 0;
}