local file = io.open("./input","r")
local freq = 0
local frequencies = {}
local repFreq = ""

for i=1, 2 do
        print("looping "..i)
        for line in file:lines() do
                freq = freq+tonumber(line)
                if frequencies[freq] then
                        repFreq = freq
                        --break
                else
                        print(freq)
                end
                frequencies[freq] = true
        end
        print("End of "..i)
end
file:close()