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#include <fstream>
#include <cstring>
using namespace std;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
char v[100005],*p=v;
long termen();
long factor();
long eval()
{
long r=termen();
while (*p=='+' || *p=='-')
{
if (*p=='+')
{
++p;
r+=termen();
}
else if (*p=='-')
{
++p;
r-=termen();
}
}
return r;
}
long termen()
{
long r=factor();
while (*p=='*' || *p=='/')
{
if (*p=='*')
{
++p;
r*=factor();
}
else
{
++p;
r/=factor();
}
}
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()
{
f.getline(v,100005);
g<<eval();
return 0;
}