add gs

RCCService2021/ExtraContent/hidden/common/challenge.lua

@@ -0,0 +1,48 @@
+--!nocheck
+
+arg0,arg1 = ...
+
+-- 8 2-input functions
+local function x1(a, b)	return a + b end
+local function x2(a, b)	return a - b end
+local function x3(a, b)	return b - a end
+local function x4(a, b)	return tonumber(tostring(b%1000) .. tostring(math.abs(a%1000))) end
+local function x5(a, b)	return tonumber(tostring(b%1337) .. tostring(math.abs(a%1337))) end
+local function x6(a, b)	return (a % 1000) * (b % 1000) end
+local function x7(a, b)	return (a % 1337) * (b % 1337) end
+local function x8(a, b)	return x6(x1(a,b),x2(a,b)) end
+
+-- shuffle list to ensure code must emulate our RNG
+local sh = {1,2,3,4,5,6,7,8}
+local r = Random.new(5)
+for i = 1,32 do
+	local j = r:NextInteger(1,8)
+	local k = r:NextInteger(1,8)
+	local t = sh[j]
+	sh[j] = sh[k]
+	sh[k] = t
+end
+local bf = {}
+bf[sh[1]] = x1
+bf[sh[2]] = x2
+bf[sh[3]] = x3
+bf[sh[4]] = x4
+bf[sh[5]] = x5
+bf[sh[6]] = x6
+bf[sh[7]] = x7
+bf[sh[8]] = x8
+
+local function x9(a, b)
+	local acc = 393
+	local cnt = 1
+	-- create and iterate over table in a way that iteration order matters.
+	for i = 1, 16 do
+		local em = (math.abs(b+acc+cnt) % 8) + 1
+		local f = bf[em]
+		acc = (acc + f(acc+a, b)) % 10000000
+		cnt = cnt + 1
+	end
+	return acc
+end
+return x9(arg0,arg1)
+