local n, m, k = io.read("*n", "*n", "*n", "*l")
local str = io.read()
local op = str:sub(1, 1)
local b = {}
for s in str:gmatch("(%d+)") do
  local z = 0LL + tonumber(s)
  table.insert(b, z)
end
local a = {}
for i = 1, n do
  local z = 0LL + io.read("*n")
  a[i] = z
end

local bsum = 0LL
for i = 1, m do bsum = bsum + b[i] end
local asum = 0LL
for i = 1, n do asum = asum + a[i] end
k = 0LL + k
bsum = bsum % k
asum = asum % k
if op == "+" then
  local r = (bsum * n + asum * m) % k
  local z = tostring(r):gsub("LL", "")
  print(z)
else
  local r = (bsum * asum) % k
  local z = tostring(r):gsub("LL", "")
  print(z)
end