#include <stdio.h>
#include <stdlib.h>
#define LMAX 100000

char ch[LMAX];
int indexx;

int adunscad();

int factor() {
  int nr;
  if( ch[indexx] == '(' ) {
    indexx++;//trec peste paranteza deschisa
    nr = adunscad();//incep o noua expresie
    indexx++;//trec peste paranteza inchisa
  }
  else {
    nr = 0;
    while( ch[indexx] >= '0' && ch[indexx] <= '9' ) {
      nr = nr * 10 + ch[indexx] - '0';
      indexx++;
    }
  }
  return nr;
}

int inmimp() {
  int rez;
  rez = factor();
  while( ch[indexx] == '*' || ch[indexx] == '/' ) {
    indexx++;
    if( ch[indexx-1] == '*' )
      rez *= factor();
    else
      rez /= factor();
  }
  return rez;
}

int adunscad() {
  int rez;
  rez = inmimp();
  while( ch[indexx] == '+' || ch[indexx] == '-' ) {
    indexx++;
    if( ch[indexx-1] == '+' )
      rez += inmimp();
    else
      rez -= inmimp();
  }
  return rez;
}

int main() {
    FILE *fin, *fout;
    fin = fopen( "evaluare.in", "r" );
    fout = fopen( "evaluare.out", "w" );
    indexx = 0;
    ch[indexx] = fgetc( fin );
    while( ch[indexx] != '\n' && ch[indexx] != EOF )
      ch[++indexx] = fgetc( fin );
    indexx = 0;
    fprintf( fout, "%d", adunscad() );
    fclose( fin );
    fclose( fout );
    return 0;
}