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input = '716892543'
cups = {}
for i = 1, #input do
table.insert(cups, tonumber(input:sub(i,i)))
end
function next_target(n)
n = n - 1
if n == 0 then
n = 9
end
return n
end
for round = 1, 100 do
current_value = cups[1]
next_values = {}
for i = 2, 4 do
next_values[cups[i]] = true
end
target = next_target(current_value)
while next_values[target] do
target = next_target(target)
end
target_index = 5
while cups[target_index] ~= target do
target_index = target_index + 1
end
new_cups = {}
if target_index ~= 5 then
for i = 5, target_index - 1 do
table.insert(new_cups, cups[i])
end
end
table.insert(new_cups, target)
for i = 2, 4 do
table.insert(new_cups, cups[i])
end
if target_index ~= 9 then
for i = target_index + 1, 9 do
table.insert(new_cups, cups[i])
end
end
table.insert(new_cups, cups[1])
cups = new_cups
end
one_index = 1
while cups[one_index] ~= 1 do
one_index = one_index + 1
end
for i = one_index + 1, 9 do
io.write(cups[i])
end
for i = 1, one_index - 1 do
io.write(cups[i])
end
print()
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