35 lines
836 B
Lua
35 lines
836 B
Lua
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#!/usr/bin/env luajit
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require("utils")
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local xmin, xmax, ymin, ymax = string.match(io.open(arg[3]):read("*a"), "target area: x=(.*)%.%.(.*), y=(.*)%.%.(.*)")
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xmin, xmax, ymin, ymax = tonumber(xmin), tonumber(xmax), tonumber(ymin), tonumber(ymax)
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local mindy = ymin
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local maxdy = 0
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if ymax > 0 then maxdy = ymax end
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if ymin < 0 then if -ymin - 1 > maxdy then maxdy = -ymin - 1 end end
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local mindx = 0
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while euler(mindx) < xmin do mindx = mindx + 1 end
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local maxdx = xmax
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local count = 0
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for odx = mindx, maxdx do
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for ody = mindy, maxdy do
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local x, y, dx, dy = 0, 0, odx, ody
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while x <= xmax and y >= math.min(0, ymin) do
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x, y = x + dx, y + dy
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if xmin <= x and x <= xmax and ymin <= y and y <= ymax then
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count = count + 1
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break
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end
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if dx > 0 then dx = dx - 1 end
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dy = dy - 1
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end
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end
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end
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print(count)
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