#ifndef Calc_h
#define Calc_h

class Calc
{
    int value;
public:
    void calc(int a, char oper, int b);
    void calc(char oper, int b);
    int getValue();
};
#endif

//////////////////////////////////

#include "Calc.h"
#include <iostream>
using namespace std;

void Calc::calc (int a, char oper, int b)
{
    switch (oper)
    {
    case '+':
        this->value = a + b;
        break;
    case '-':
        this->value = a - b;
        break;
    case '*':
        this->value = a * b;
        break;
    case '%':
        this->value = a % b;
        break;
    }
    return;
}

void Calc::calc (char oper, int b)
{
    switch (oper)
    {
    case '+':
        this->value = value + b;
        break;
    case '-':
        this->value = value - b;
        break;
    case '*':
        this->value = value * b;
        break;
    case '%':
        this->value = value % b;
        break;
    }
    return;
}

int Calc::getValue()
{
    return value;
}

////////////////////////
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include "Calc.h"
using namespace std;

int main ()
{
    int a, b;
    char oper;
    Calc res;
    cin >> a >> oper >> b;
    res.calc (a, oper, b);
    int check = 1;

    cin >> oper >> b;
    while (oper != 'C')
    {
        check++;
        res.calc(oper, b);
        if (check % 3 == 0)
        {
            if (check == 3)
            {
            cout << res.getValue();
            }
            else
            {
            cout << endl << res.getValue();
            }
        }
        cin >> oper >> b;
    }
    return 0;
};