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#include <fstream>
#include <cstdio>
#include <cstring>
using namespace std;
char s[100010],*p;
int eval();
int termen();
int factor();
int eval()
{
int r;
r=termen();
while(*p=='+'||*p=='-')
if(*p=='+')
{
++p;
r+=termen();
break;
}
else
if(*p=='-')
{
++p;
r-=termen();
break;
}
return r;
}
int termen()
{
int r;
r=factor();
while(*p=='*'||*p=='/')
if(*p=='*')
{
++p;
r*=factor();
break;
}
else
if(*p=='/')
{
++p;
r/=factor();
break;
}
return r;
}
int factor()
{
int r;
r=0;
if(*p=='(')
{
++p;
r=eval();
++p;
}
else
{
while('0'<=*p && *p<='9')
{
r*=10;
r+=(int)*p-'0';
++p;
}
}
return r;
}
int main()
{
freopen("evaluare.in","r",stdin);
ofstream g ("evaluare.out");
gets(s);
p=s;
int n=eval();
g<<n;
}