結果
| 問題 |
No.1916 Making Palindrome on Gird
|
| コンテスト | |
| ユーザー |
 yakamoto
|
| 提出日時 | 2022-04-29 22:22:28 |
| 言語 | Kotlin (2.1.0) |
| 結果 |
AC
|
| 実行時間 | 538 ms / 3,000 ms |
| コード長 | 4,556 bytes |
| コンパイル時間 | 18,648 ms |
| コンパイル使用メモリ | 469,404 KB |
| 実行使用メモリ | 184,228 KB |
| 最終ジャッジ日時 | 2024-06-29 03:56:51 |
| 合計ジャッジ時間 | 28,270 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge5 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 30 |
コンパイルメッセージ
Main.kt:168:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun debug(a: LongArray) {
^
Main.kt:172:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun debug(a: IntArray) {
^
Main.kt:176:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun debug(a: BooleanArray) {
^
Main.kt:180:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")}
^
Main.kt:182:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun debugDim(A: Array<LongArray>) {
^
Main.kt:189:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun debugDim(A: Array<IntArray>) {
^
Main.kt:196:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun debugDim(A: Array<BooleanArray>) {
^
Main.kt:213:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()}
^
ソースコード
import java.io.BufferedReader
import java.io.InputStream
import java.io.InputStreamReader
import java.lang.AssertionError
import java.util.*
import kotlin.math.abs
import kotlin.math.max
import kotlin.math.min
val MOD = 1_000_000_007
class Solver(stream: InputStream, private val out: java.io.PrintWriter) {
private val reader = BufferedReader(InputStreamReader(stream), 32768)
fun solve() {
val (H, W) = na(2)
val grid = Array(H){ns()}
val N = H + W - 1
val dp = Array(N){Array(H){LongArray(H)}}
if (N == 1) {
out.println(1)
return
}
val (m00, m01) = if (N % 2 == 1) {
val m = N/2
for (h in 0 until H) {
val w = m - h
if (w !in 0 until W) continue
dp[m][h][h] = 1
}
Pair(N/2 - 1, N/2 + 1)
}
else {
val m = N/2 - 1
for (h in 0 until H) {
val w = m - h
if (w !in 0 until W) continue
debug{"m:$m h:$h"}
if (h + 1 in 0 until H && grid[h][w] == grid[h + 1][w]) dp[m][h][h + 1] = 1
if (w + 1 in 0 until W && grid[h][w] == grid[h][w + 1]) dp[m][h][h] = 1
}
Pair(N/2 - 2, N/2 + 1)
}
debug{"$m00:$m01"}
for (i in 0 until N) {
debug{"dp[$i]"}
debug { dp[i].map { it.joinToString(" ") }.joinToString("\n") }
}
for (i in 0 .. min(N - m01, m00)) {
val m0 = m00 - i
val m1 = m01 + i
for (h0 in 0 until H) {
val w0 = m0 - h0
if (w0 !in 0 until W) continue
for (h1 in 0 until H) {
val w1 = m1 - h1
if (w1 !in 0 until W) continue
if (grid[h0][w0] != grid[h1][w1]) continue
for (dh0 in 0 until 2) {
for (dh1 in -1 .. 0) {
if (h0 + dh0 !in 0 until H) continue
if (h1 + dh1 !in 0 until H) continue
dp[m0][h0][h1] = (dp[m0][h0][h1] + dp[m0 + 1][h0 + dh0][h1 + dh1]) % MOD
}
}
}
}
}
out.println(dp[0][0][H - 1])
}
private val isDebug = try {
// なんか本番でエラーでる
System.getenv("MY_DEBUG") != null
} catch (t: Throwable) {
false
}
private var tokenizer: StringTokenizer? = null
private fun next(): String {
while (tokenizer == null || !tokenizer!!.hasMoreTokens()) {
tokenizer = StringTokenizer(reader.readLine())
}
return tokenizer!!.nextToken()
}
private fun ni() = next().toInt()
private fun nl() = next().toLong()
private fun ns() = next()
private fun na(n: Int, offset: Int = 0): IntArray {
return IntArray(n) { ni() + offset }
}
private fun nal(n: Int, offset: Int = 0): LongArray {
val res = LongArray(n)
for (i in 0 until n) {
res[i] = nl() + offset
}
return res
}
private fun na2(n: Int, offset: Int = 0): Array<IntArray> {
val a = Array(2){IntArray(n)}
for (i in 0 until n) {
for (e in a) {
e[i] = ni() + offset
}
}
return a
}
private inline fun debug(msg: () -> String) {
if (isDebug) System.err.println(msg())
}
/**
* コーナーケースでエラー出たりするので、debug(dp[1])のように添え字付きの場合はdebug{}をつかうこと
*/
private inline fun debug(a: LongArray) {
debug { a.joinToString(" ") }
}
private inline fun debug(a: IntArray) {
debug { a.joinToString(" ") }
}
private inline fun debug(a: BooleanArray) {
debug { toString(a) }
}
private inline fun toString(a: BooleanArray) = run{a.map { if (it) 1 else 0 }.joinToString("")}
private inline fun debugDim(A: Array<LongArray>) {
if (isDebug) {
for (a in A) {
debug(a)
}
}
}
private inline fun debugDim(A: Array<IntArray>) {
if (isDebug) {
for (a in A) {
debug(a)
}
}
}
private inline fun debugDim(A: Array<BooleanArray>) {
if (isDebug) {
for (a in A) {
debug(a)
}
}
}
/**
* 勝手にimport消されるのを防ぎたい
*/
private fun hoge() {
min(1, 2)
max(1, 2)
abs(-10)
}
private inline fun assert(b: Boolean) = run{if (!b) throw AssertionError()}
private inline fun assert(b: Boolean, f: () -> String) = run{if (!b) throw AssertionError(f())}
companion object {
// TestRunnerから呼びたいので単純なmainじゃだめ
fun main() {
val out = java.io.PrintWriter(System.out)
Solver(System.`in`, out).solve()
out.flush()
}
}
}
/**
* judgeから呼ばれる
*/
fun main() = Solver.main()