結果
| 問題 |
No.1577 織姫と彦星2
|
| ユーザー |
yuruhiya
|
| 提出日時 | 2021-06-30 17:10:21 |
| 言語 | Crystal (1.14.0) |
| 結果 |
AC
|
| 実行時間 | 42 ms / 2,000 ms |
| コード長 | 1,245 bytes |
| コンパイル時間 | 14,134 ms |
| コンパイル使用メモリ | 295,224 KB |
| 実行使用メモリ | 6,948 KB |
| 最終ジャッジ日時 | 2024-06-27 03:21:58 |
| 合計ジャッジ時間 | 14,027 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 |
|---|---|
| sample | AC * 5 |
| other | AC * 53 |
コンパイルメッセージ
In Main.cr:28:12
28 | STDOUT.write_utf8 Slice.new(now, ptr + 5 - now)
^---------
Warning: Deprecated IO::FileDescriptor#write_utf8. Use `#write_string` instead.
A total of 1 warnings were found.
ソースコード
lib LibC
fun getchar_unlocked : Char
fun putchar_unlocked(Char)
end
def read
x = 0
loop do
c = LibC.getchar_unlocked
break unless 48 <= c
x &*= 10
x &+= c &- 48
end
x
end
def putui(x : Int32)
if x == 0
LibC.putchar_unlocked(48)
else
ptr = Pointer(UInt8).malloc(5)
now = ptr + 5
while x != 0
now -= 1
now.value = (48 &+ x.unsafe_mod(10)).to_u8!
x = x.unsafe_div(10)
end
STDOUT.write_utf8 Slice.new(now, ptr + 5 - now)
end
end
n = read
s = read
t = read
a = Pointer(Int32).malloc(n &+ 2)
n.times do |i|
a[i] = read
end
a[n] = s
a[n &+ 1] = t
hash = Hash(Int32, Int32).new(n &+ 2)
n.times do |i|
hash[a[i]] = i
end
hash[s] = n
hash[t] = n &+ 1
que = Pointer(Int32).malloc(n &+ 2)
que[0] = n
size = 1
dist = Pointer(Int32).malloc(n &+ 2)
dist[n] = 1
while size != 0
i = que.value
que += 1
size &-= 1
d = dist[i]
ai = a[i]
if i == n &+ 1
putui(d &- 2)
LibC.putchar_unlocked(10)
exit
end
bit = 1
30.times do
if (j = hash[ai ^ bit]?) && dist[j] == 0
dist[j] = d &+ 1
que[size] = j
size &+= 1
end
bit = bit.unsafe_shl(1)
end
end
LibC.putchar_unlocked 45
LibC.putchar_unlocked 49
LibC.putchar_unlocked 10
yuruhiya