#include <iostream>
#include <fstream>
using namespace std;
ifstream f("fisier.in");
ofstream g("fisier.out");
char s[100001],*p;
int r;
int eval();
int termene();
int factor();
int main()
{f.getline(s,3000);
p=s;
r=eval();
g<<r;
    return 0;
}
int eval()
{int r=termene();
while(*p=='+'||*p=='-')
{if(*p=='+') p++,r+=termene();
else p++,r-=termene();}
return r;
}


int termene()
{int r=factor();
while(*p=='*'||*p=='/')
{if(*p=='*') p++,r*=factor();
else p++,r/=factor();}
return r;
}


int factor()
{int r=0;
if(*p=='(')
p++,r=eval(),p++;
else while('0'<=*p&&'9'>=*p)
r=r*10+*p-'0',p++;
return r;
}