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#include <iostream>
#include <fstream>
#include <cstdio>
using namespace std;
char S[1000100],*p=S;
ifstream f("evaluare.in");
ofstream g("evaluare.out");
long termen();
long factor();
long eval();
long eval()
{
long r=termen();
while (*p=='+'||*p=='-')
{
if (*p=='+')
{
p++;
r+=termen();
break;
}
else
{
p++;
r-=termen();
break;
}
}
return r;
}
long termen()
{
long r=factor();
while (*p=='*'||*p=='/')
{
if (*p=='*')
{
p++;
r*=factor();
break;
}
else
{
p++;
r/=factor();
break;
}
}
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>>S;
g<<eval();
}