io.input("test")
io.input("input")

function s2d( s )
  local b = #s - 1
  local num = 0
  for i = 1, #s do
    local sub = string.sub( s, i, i )
    local d = tonumber(sub)
    if not d then
      if sub=="-" then d=-1 
      elseif sub=="=" then d=-2 end
    end
    num = num + d*(5^b)
    b = b - 1
  end
  return num
end

function d2s( num )
  local s = ""
  repeat
    local mod = num % 5
    local rest = num // 5
    local dif = mod - 5
    local digit
    if dif >= -2 then
      rest = rest + 1
      if dif == -2 then digit = "="
      elseif dif == -1 then digit = "-" end
    else
      digit = string.format("%d", mod)
    end
    s = digit .. s
    num = rest
  until num == 0
  return s
end

local sum = 0
for line in io.lines() do
  sum = sum + s2d(line)
end

local result1 = d2s(sum)
print("part1:", result1)