結果
| 問題 |
No.1439 Let's Compare!!!!
|
| コンテスト | |
| ユーザー |
 yakamoto
|
| 提出日時 | 2021-03-26 21:53:46 |
| 言語 | Kotlin (2.1.0) |
| 結果 |
AC
|
| 実行時間 | 922 ms / 2,000 ms |
| コード長 | 4,603 bytes |
| コンパイル時間 | 19,204 ms |
| コンパイル使用メモリ | 459,828 KB |
| 実行使用メモリ | 93,832 KB |
| 最終ジャッジ日時 | 2024-11-29 08:44:13 |
| 合計ジャッジ時間 | 28,242 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge5 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 17 |
コンパイルメッセージ
Main.kt:55:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun sub(a: Int, b: Int) = a - b
^
Main.kt:56:11: warning: expected performance impact from inlining is insignificant. Inlining works best for functions with parameters of functional types
private inline fun lt(a: Int, b: Int) = a < b
^
Main.kt:201:11: 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:205:11: 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:209:11: 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:213:11: 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:215:11: 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:222:11: 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:229:11: 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:246:
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
/**
* RangeUpdateTreeと同等と考える
*/
class BIT(val n: Int) {
private val N =
if (Integer.highestOneBit(n) == n) n
else Integer.highestOneBit(n) shl 1
private val bit = IntArray(N + 1)
/**
* 0-indexed
*/
fun get(i: Int): Int {
var x = i + 1
var s = 0
while(x > 0) {
s += bit[x]
x -= x and -x
}
return s
}
/**
* i: 0-indexed
*/
fun addFrom(i: Int, a: Int) {
var x = i + 1
while(x <= N) {
bit[x] += a
x += x and -x
}
}
/**
* i: 0-indexed
*/
fun addAt(i: Int, a: Int) {
addFrom(i, a)
addFrom(i + 1, -a)
}
private inline fun sub(a: Int, b: Int) = a - b
private inline fun lt(a: Int, b: Int) = a < b
/**
* ↑の中身変えること
* 累積後の値が単調増加になっていること
* @return 0-indexed 見つからなかったら n
*/
fun lowerBound(W: Int): Int {
var k = N
var x = 0
var w = W
while(k > 0) {
if (x + k <= N && lt(bit[x + k], w)) {
w = sub(w, bit[x + k])
x += k
}
k /= 2
}
return min(n, x)
}
}
class Solver(stream: InputStream, private val out: java.io.PrintWriter) {
private val reader = BufferedReader(InputStreamReader(stream), 32768)
fun solve() {
val N = ni()
val S = ns().map{it-'0'}.toIntArray()
val T = ns().map{it-'0'}.toIntArray()
val Q = ni()
val bit = BIT(N)
for (i in 0 until N) {
if (S[i] != T[i]) bit.addFrom(i, 1)
}
for (q in 0 until Q) {
val str = when(ns()) {
"S" -> S
else -> T
}
val i = ni() - 1
val d = ni()
val prev = if (S[i] == T[i]) 0 else 1
str[i] = d
val next = if (S[i] == T[i]) 0 else 1
val add = next - prev
bit.addFrom(i, add)
val idx = bit.lowerBound(1)
val ans = if (idx == N) "="
else {
if (S[idx] < T[idx]) "<" else ">"
}
out.println(ans)
}
}
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())}
}
fun main() {
val out = java.io.PrintWriter(System.out)
Solver(System.`in`, out).solve()
out.flush()
}