#include<stdio.h>
#define MAXBUF 100000
int expresie();
int termen();
int factor();
char buf[MAXBUF];
int pos=0;
FILE*fin,*fout;
int main()
{
    fin=fopen("evaluare.in","r");
    fout=fopen("evaluare.out","w");
    fgets(buf,MAXBUF,fin);
    fprintf(fout,"%d",expresie());
    fclose(fin);
    fclose(fout);
}
int expresie()
{
    int sum=termen();
    while(buf[pos]=='+' || buf[pos]=='-')
    {
        if(buf[pos]=='+')
        {
            pos++;
            sum+=termen();
        }
        else
        {
            pos++;
            sum-=termen();
        }
    }
    return sum;
}
int termen()
{
    int prod=factor();
    while(buf[pos]=='*' || buf[pos]=='/')
    {
        if(buf[pos]=='*')
        {
            pos++;
            prod*=factor();
        }
        else
        {
            pos++;
            prod/=factor();
        }
    }
    return prod;
}
int factor()
{
    int val=0,semn=1;
    while(buf[pos]=='-')
    {
        pos++;
        semn=-semn;
    }
    if(buf[pos]=='(')
    {
        pos++;
        val=expresie();
        pos++;
        return semn*val;
    }
    while(buf[pos]>='0' && buf[pos]<='9')
    {
        val=val*10+buf[pos]-'0';
        pos++;
    }
    return semn*val;
}