def contains(string, set):
    return 1 in [c in string for c in set]

# Evaluate mathematical expression from string
def calculate(expression):
    if contains(expression, '_\'\"[];'):
        return 'no'
    try:
        result = eval(float_expression, {"__builtins__": None}, safe_dict)
        # if isinstance(result, float) and result.is_integer():
        #   result = int(result)
        # return result
        if -1e-10 < result < 1e-10:
            return '0'
        elif -1e-10 < int(result) - result < 1e-10:
            return str(int(result))
        else:
            return str(result)
    except Exception, ex:
        print ex

expression = raw_input()
calculate(expression)