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#! /usr/bin/lua
function luckynumbers(a)
local maxs = {}
for x = 1, #(a[1]) do
local max = {0, 0, 0}
for y = 1, #a do
if a[y][x] > max[1] then
max = {a[y][x], y, x}
end
end
table.insert(maxs, max)
end
local mins = {}
for y = 1, #a do
local min = {a[y][1], y, 1}
for x = 1, #(a[1]) do
if a[y][x] < min[1] then
min = {a[y][x], y, x}
end
end
table.insert(mins, min)
end
for i, v in ipairs(mins) do
for j, w in ipairs(maxs) do
if v[1] == w[1] and v[2] == w[2] and v[3] == w[3] then
return v[1]
end
end
end
return -1
end
if luckynumbers({{3, 7, 9}, {9, 11, 13}, {15, 16, 17}}) == 15 then
io.write("Pass")
else
io.write("FAIL")
end
io.write(" ")
if luckynumbers({{1, 10, 4, 2}, {9, 3, 8, 7}, {15, 16, 17, 12}}) == 12 then
io.write("Pass")
else
io.write("FAIL")
end
io.write(" ")
if luckynumbers({{7, 8}, {1, 2}}) == 7 then
io.write("Pass")
else
io.write("FAIL")
end
print("")
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