while 1 do
       a,op,b = STDIN.gets.split
       a = a.to_i
       b = b.to_i

       case op
       when '+' then
           puts a + b
       when '-' then
           puts a - b
       when '*' then
           puts a * b
       when '/' then
           puts a / b
       else
           break
    end
end