#include <cstdio>
#include <cstring>

using namespace std;

const int LMAX = 2;
char op[4][4]={"+-","*/","^",""};

const int NMAX = 100005;

char s[NMAX];
char *p=s;

int eval(int a,int b, char sign){
	if(sign=='+')
		return a+b;
	if(sign=='-')
		return a-b;
	if(sign=='*')
		return a*b;
	if(sign=='/')
		return a/b;
}


int expr(int lvl){
	int x;
	if(lvl==LMAX)
		if(*p=='('){
			++p;
			x=expr(0);
			++p;
			return x;
		}else{
			for(x=0;*p>='0' && *p<='9';++p)
				x=x*10+*p-'0';
			return x;
		}
	else{
		int y=0;
		for(x=expr(lvl+1);strchr(op[lvl],*p);x=y)
			y=eval(x,expr(lvl+1),*p++);
		
		return x;
	}
}

int main(){
	freopen("evaluare.in","r",stdin);
	freopen("evaluare.out","w",stdout);
	scanf("%s",s);
	
	int n=strlen(s);
	s[n]=1;
	
	printf("%d\n",expr(0));
}