868928779f
```
do
local t = os.tmpname()
local f = io.open(t, 'w')
f:write('test')
f:close()
local i = io.input()
for l in io.lines(t) do end
local n = io.input()
assert(n == i, tostring(n).." ~= "..tostring(i))
os.remove(t)
print('+')
end
```