結果
| 問題 |
No.1949 足し算するだけのパズルゲーム(2)
|
| コンテスト | |
| ユーザー |
👑 |
| 提出日時 | 2022-05-29 00:03:01 |
| 言語 | Lua (LuaJit 2.1.1734355927) |
| 結果 |
AC
|
| 実行時間 | 223 ms / 3,000 ms |
| コード長 | 2,412 bytes |
| コンパイル時間 | 27 ms |
| コンパイル使用メモリ | 6,688 KB |
| 実行使用メモリ | 8,320 KB |
| 最終ジャッジ日時 | 2024-09-20 23:38:55 |
| 合計ジャッジ時間 | 3,645 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 26 |
ソースコード
local mfl, mce = math.floor, math.ceil
local bls, brs = bit.lshift, bit.rshift
local Heapq = {}
Heapq.create = function(self, lt)
self.lt = lt
self.cnt = 0
self.t = {}
end
Heapq.empty = function(self)
return self.cnt == 0
end
Heapq.push = function(self, v)
local hqlt = self.lt
local hqt = self.t
local c = self.cnt + 1
self.cnt = c
hqt[c] = v
while 1 < c do
local p = brs(c, 1)
if hqlt(hqt[c], hqt[p]) then
hqt[c], hqt[p] = hqt[p], hqt[c]
c = p
else
break
end
end
end
Heapq.pop = function(self)
local hqlt = self.lt
local hqt = self.t
local ret = hqt[1]
local c = self.cnt
hqt[1] = hqt[c]
c = c - 1
self.cnt = c
local p = 1
while true do
local d1, d2 = p * 2, p * 2 + 1
if c < d1 then break
elseif c < d2 then
if hqlt(hqt[d1], hqt[p]) then
hqt[d1], hqt[p] = hqt[p], hqt[d1]
end
break
else
if hqlt(hqt[d1], hqt[d2]) then
if hqlt(hqt[d1], hqt[p]) then
hqt[d1], hqt[p] = hqt[p], hqt[d1]
p = d1
else break
end
else
if hqlt(hqt[d2], hqt[p]) then
hqt[d2], hqt[p] = hqt[p], hqt[d2]
p = d2
else break
end
end
end
end
return ret
end
Heapq.new = function(lt)
local obj = {}
setmetatable(obj, {__index = Heapq})
obj:create(lt)
return obj
end
local h, w = io.read("*n", "*n")
local sr, sc = io.read("*n", "*n")
local added = {}
local a = {}
local v = 0
for i = 1, h do
for j = 1, w do
local idx = (i - 1) * w + j
a[idx] = io.read("*n")
added[idx] = false
if i == sr and j == sc then
v = a[idx]
added[idx] = true
end
end
end
local hq = Heapq.new(function(x, y) return a[x] < a[y] end)
local function walk(src)
local row = mce(src / w)
local col = src - (row - 1) * w
if 1 < row and not added[src - w] then
added[src - w] = true
hq:push(src - w)
end
if row < h and not added[src + w] then
added[src + w] = true
hq:push(src + w)
end
if 1 < col and not added[src - 1] then
added[src - 1] = true
hq:push(src - 1)
end
if col < w and not added[src + 1] then
added[src + 1] = true
hq:push(src + 1)
end
end
walk((sr - 1) * w + sc)
while not hq:empty() do
local idx = hq:pop()
-- print(v, a[idx])
if v <= a[idx] then
print("No") os.exit()
end
walk(idx)
v = v + a[idx]
end
print("Yes")