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#include<iostream>
#include<fstream>
using namespace std;
void main(){
	ifstream data("c.txt");
	double total;		//注意是double!!
	double num;
	char op;
	data >> total ;
	cout << total ;
	while(!data.eof())
	{
		data >> op;
		cout << op;
		
		data >> num;
		cout << num;

		if(op=='+')
			total+=num;
		else if(op=='-')
			total-=num;
		else if(op=='*')
			total*=num;
		else if(op=='/')
			total/=num;


	}
	cout << endl;
	cout << int(total+0.5)<< endl;
}