結果
| 問題 | No.1390 Get together |
| ユーザー |
 da_louis
|
| 提出日時 | 2021-02-12 23:35:41 |
| 言語 | Kotlin (1.9.23) |
| 結果 |
AC
|
| 実行時間 | 965 ms / 2,000 ms |
| コード長 | 15,774 bytes |
| コンパイル時間 | 20,786 ms |
| コンパイル使用メモリ | 493,040 KB |
| 実行使用メモリ | 125,640 KB |
| 最終ジャッジ日時 | 2024-07-20 01:20:29 |
| 合計ジャッジ時間 | 41,453 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge2 |
（要ログイン）
テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | AC | 315 ms
51,504 KB |
| testcase_01 | AC | 269 ms
51,344 KB |
| testcase_02 | AC | 271 ms
51,304 KB |
| testcase_03 | AC | 328 ms
53,680 KB |
| testcase_04 | AC | 333 ms
53,336 KB |
| testcase_05 | AC | 334 ms
53,328 KB |
| testcase_06 | AC | 339 ms
53,300 KB |
| testcase_07 | AC | 337 ms
53,316 KB |
| testcase_08 | AC | 333 ms
53,300 KB |
| testcase_09 | AC | 343 ms
53,948 KB |
| testcase_10 | AC | 284 ms
51,624 KB |
| testcase_11 | AC | 282 ms
51,604 KB |
| testcase_12 | AC | 288 ms
51,632 KB |
| testcase_13 | AC | 280 ms
51,272 KB |
| testcase_14 | AC | 273 ms
51,312 KB |
| testcase_15 | AC | 271 ms
51,512 KB |
| testcase_16 | AC | 594 ms
100,672 KB |
| testcase_17 | AC | 841 ms
122,876 KB |
| testcase_18 | AC | 579 ms
100,484 KB |
| testcase_19 | AC | 937 ms
124,884 KB |
| testcase_20 | AC | 927 ms
125,164 KB |
| testcase_21 | AC | 965 ms
125,640 KB |
| testcase_22 | AC | 860 ms
119,024 KB |
| testcase_23 | AC | 860 ms
119,068 KB |
| testcase_24 | AC | 819 ms
118,848 KB |
| testcase_25 | AC | 943 ms
124,896 KB |
| testcase_26 | AC | 884 ms
125,628 KB |
| testcase_27 | AC | 865 ms
124,520 KB |
| testcase_28 | AC | 904 ms
125,296 KB |
| testcase_29 | AC | 907 ms
124,560 KB |
| testcase_30 | AC | 872 ms
124,536 KB |
| testcase_31 | AC | 907 ms
125,356 KB |
コンパイルメッセージ
Main.kt:90:13: warning: 'appendln(Int): kotlin.text.StringBuilder /* = java.lang.StringBuilder */' is deprecated. Use appendLine instead. Note that the new method always appends the line feed character '\n' regardless of the system line separator.
appendln(n)
^
Main.kt:123:48: warning: 'toByte(): Byte' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
private fun Byte.isNumeric() = this in '0'.toByte()..'9'.toByte()
^
Main.kt:123:62: warning: 'toByte(): Byte' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
private fun Byte.isNumeric() = this in '0'.toByte()..'9'.toByte()
^
Main.kt:124:68: warning: 'toByte(): Byte' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
private fun Byte.toNumVal() = if (this.isNumeric()) this - '0'.toByte() else error("$this is not numeric")
^
Main.kt:156:22: warning: 'toByte(): Byte' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
if (b == '-'.toByte()) {
^
Main.kt:182:22: warning: 'toByte(): Byte' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
if (b == '-'.toByte()) {
^
Main.kt:188:22: warning: 'toByte(): Byte' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
if (b == '.'.toByte()) {
^
ソースコード
import java.io.ByteArrayInputStream
import java.io.ByteArrayOutputStream
import java.io.PrintStream
fun main() = if (localEnv && execChecker) checker() else contest298b()
fun contest298b() = solve()
@OptIn(ExperimentalStdlibApi::class)
private fun solve() = Messiah_contest298b(MOD).exec {
val (n, m) = readInt(2)
val slimes = Array(n) { readInt() to readInt() }
val uf = UnionFind(m + 1)
var answer = 0
val map = slimes.groupBy { it.second }.map { it.value.map { it.first }.distinct() }
for (boxes in map) {
for (i in 1..boxes.lastIndex) {
if (uf.unite(boxes.first(), boxes[i])) answer++
}
}
println(answer)
}
private class UnionFind(size: LongArray) {
constructor(initSize: Int) : this(LongArray(initSize) { 1L })
private val parent: IntArray = IntArray(size.size) { it }
private val size: LongArray = size.copyOf()
fun root(x: Int): Int {
if (x == parent[x]) return x
val xr = root(parent[x])
parent[x] = xr
return xr
}
fun unite(x: Int, y: Int): Boolean {
val xr = root(x)
val yr = root(y)
if (xr == yr) return false
if (size[xr] < size[yr]) return unite(yr, xr)
size[xr] += size[yr]
parent[yr] = xr
return true
}
fun isSame(x: Int, y: Int): Boolean = root(x) == root(y)
fun unite(pair: Pair<Int, Int>): Boolean = unite(pair.first, pair.second)
fun isSame(pair: Pair<Int, Int>): Boolean = isSame(pair.first, pair.second)
fun size(x: Int): Long = size[root(x)]
}
private const val MOD = 1_000_000_007
// region kokokara template dayo (^o^)
private const val execChecker = false
private val localEnv =
runCatching { "ENABLE_DEBUG_MODE_FOR_COMPETITIVE_PROGRAMING" in System.getenv() }.getOrNull() ?: false
private fun checker() = Messiah_contest298b(MOD).exec {
debugln("#######################################################")
debugln("############### executing check mode. ###############")
debugln("#######################################################")
fun getOutPut(input: String, action: () -> Unit): String {
System.setIn(ByteArrayInputStream(input.toByteArray()))
val sysOut = ByteArrayOutputStream()
System.setOut(PrintStream(sysOut))
action()
return sysOut.toString()
}
val wrongCases = mutableSetOf<List<String>>()
while (wrongCases.size < 10) {
/*
examples
val randomString = (1..20).map { ('a'..'z').random() }.joinToString("")
val randomNum = Random.nextInt(0,2000)
*/
val n = 0
val input = buildString {
appendln(n)
}
val solve = getOutPut(input, ::solve)
val greedy = getOutPut(input, ::greedy)
if (solve != greedy && wrongCases.add(listOf(solve, greedy))) {
debugln("#################### wrong case: ${wrongCases.size} ####################")
debugln("input:")
debugln(input)
debugln("solve:")
debugln(solve)
debugln("greedy:")
debugln(greedy)
}
}
}
private fun greedy() = Messiah_contest298b(MOD).exec {
TODO()
}
@Suppress("ClassName", "unused", "FunctionName", "PropertyName")
private class Messiah_contest298b(private val mod: Int) {
//////////////////////////////////////////////////
// IO
//////////////////////////////////////////////////
private val input = System.`in`
private val buffer = ByteArray(1024)
private var pointer = 0
private var bufferLength = 0
private val sb = StringBuilder()
private fun Byte.isPrintable() = this in 33..126
private fun Byte.isNumeric() = this in '0'.toByte()..'9'.toByte()
private fun Byte.toNumVal() = if (this.isNumeric()) this - '0'.toByte() else error("$this is not numeric")
private val lineSeparator: String = System.lineSeparator()
private fun hasNextByte(): Boolean {
return if (pointer < bufferLength) true else {
pointer = 0
bufferLength = input.read(buffer)
bufferLength > 0
}
}
private fun readByte(): Byte = if (hasNextByte()) buffer[pointer++] else -1
private fun skipUnprintable() = run { while (hasNextByte() && !buffer[pointer].isPrintable()) pointer++ }
private fun hasNext(): Boolean = run { skipUnprintable() }.run { hasNextByte() }
private fun hasNextOrError() = if (!hasNext()) error("has no next element.") else Unit
fun readString(): String {
hasNextOrError()
val sb = StringBuilder()
var b = readByte()
while (b.isPrintable()) {
sb.appendCodePoint(b.toInt())
b = readByte()
}
return sb.toString()
}
fun readLong(): Long {
hasNextOrError()
var n = 0L
var negative = false
var b = readByte()
if (b == '-'.toByte()) {
negative = true
b = readByte()
}
if (!b.isNumeric()) error("$b is not numeric.")
while (true) {
when {
b.isNumeric() -> n = n * 10 + b.toNumVal()
b.toInt() == -1 || !b.isPrintable() -> return if (negative) -n else n
else -> error("failed to parse. [n=$n, b=$b]")
}
b = readByte()
}
}
fun readInt() = readLong()
.let { if (it in Int.MIN_VALUE..Int.MAX_VALUE) it.toInt() else error("$it is not in range of Int.") }
fun readIntAsIndex() = readInt().dec()
fun readDouble(): Double {
hasNextOrError()
var n = 0.0
var div = 1.0
var negative = false
var b = readByte()
if (b == '-'.toByte()) {
negative = true
b = readByte()
}
do n = n * 10 + b.toNumVal()
while (run { b = readByte() }.run { b.isNumeric() })
if (b == '.'.toByte()) {
while (run { b = readByte() }.run { b.isNumeric() })
n += b.toNumVal() / (run { div *= 10 }.run { div })
}
return if (negative) -n else n
}
fun readString(size: Int): Array<String> = Array(size) { readString() }
@Suppress("UNUSED_PARAMETER")
fun readChars(h: Int, w: Int): Array<CharArray> = Array(h) { readString().toCharArray() }
fun readLong(size: Int): LongArray = LongArray(size) { readLong() }
fun readLong(h: Int, w: Int): Array<LongArray> = Array(h) { readLong(w) }
fun readInt(size: Int): IntArray = IntArray(size) { readInt() }
fun readInt(h: Int, w: Int): Array<IntArray> = Array(h) { readInt(w) }
fun readIntAsIndex(size: Int): IntArray = IntArray(size) { readIntAsIndex() }
fun readIntAsIndex(h: Int, w: Int): Array<IntArray> = Array(h) { readIntAsIndex(w) }
fun readDouble(size: Int): DoubleArray = DoubleArray(size) { readDouble() }
fun readDouble(h: Int, w: Int): Array<DoubleArray> = Array(h) { readDouble(w) }
fun readBooleanWithSeparator(size: Int, trueElement: String): BooleanArray =
BooleanArray(size) { readString() == trueElement }
fun readBooleanWithSeparator(h: Int, w: Int, trueElement: String): Array<BooleanArray> =
Array(h) { readBooleanWithSeparator(w, trueElement) }
@Suppress("UNUSED_PARAMETER")
fun readBooleanWithoutSeparator(size: Int, trueElement: Char): BooleanArray =
readString().map { it == trueElement }.toBooleanArray()
fun readBooleanWithoutSeparator(h: Int, w: Int, trueElement: Char): Array<BooleanArray> =
Array(h) { readBooleanWithoutSeparator(w, trueElement) }
fun println(): Unit = run { sb.append(lineSeparator) }
fun print(any: Any): Unit = run { sb.append(any.toString()) }
fun println(any: Any): Unit = run { sb.append(any.toString() + lineSeparator) }
fun flush() = run { kotlin.io.println(sb); sb.clear() }
fun debug(any: Any): Unit = run { if (localEnv) System.err.print(any) }
fun debugln(any: Any): Unit = run { if (localEnv) System.err.println(any) }
fun debugln(): Unit = run { if (localEnv) System.err.println() }
fun debugExec(action: () -> Unit): Unit = run { if (localEnv) action() }
fun exec(action: Messiah_contest298b.() -> Unit) {
var t: Throwable? = null
Thread(null, { action() }, "solve", 128 * 1024 * 1024)
.apply { setUncaughtExceptionHandler { _, t1 -> t = t1 } }
.apply { start() }.join()
t?.let { throw it }
kotlin.io.print(sb)
}
fun readLine(): Nothing = error("readLine is disabled.")
//////////////////////////////////////////////////
// MOD
//////////////////////////////////////////////////
fun Long.invertMod(): Long = invGcd(this).second
fun Long.safeMod(): Long = (this % MOD).let { if (it < 0) it + MOD else it }
fun Long.modPow(p: Long): Long {
var x = this % MOD
var y = p
var result = 1L
while (y > 0) {
if (y % 2 == 1L) result = (result * x) % MOD
y = y shr 1
x = (x * x) % MOD
}
return result
}
fun Long.modPow(p: Long, m: Int): Long {
var x = this % m
var y = p
var result = 1L
while (y > 0) {
if (y % 2 == 1L) result = (result * x) % m
y = y shr 1
x = (x * x) % m
}
return result
}
fun invGcd(a: Long): Pair<Long, Long> {
val am = a.safeMod()
if (a == 0L) return MOD.toLong() to 0L
var s = MOD.toLong()
var t = am
var m0 = 0L
var m1 = 1L
while (t != 0L) {
val u = s / t
s -= t * u
m0 -= m1 * u
var temp = s
s = t
t = temp
temp = m0
m0 = m1
m1 = temp
}
if (m0 < 0) m0 += MOD / s
return s to m0
}
//////////////////////////////////////////////////
// Misc
//////////////////////////////////////////////////
/**
* `n.indices()` is sugar syntax of `0 until n`.
*/
val Int.indices: IntRange get() = 0 until this
/**
* `[index] in [this]` is sugar syntax of `index in 0 until [this]`.
*/
operator fun Int.contains(index: Int): Boolean = index in this.indices
/**
* `[this].mapIndices { transform }` is sugar syntax of `(0 until [this]).map{ transform(it) }`.
*/
inline fun <R> Int.mapIndices(transform: (Int) -> R): List<R> = this.indices.map(transform)
/**
* `[this].mapIndices(x) { transform }` is sugar syntax of
* `(0 until [this]).map{ y1-> (0 until [x]).map { x1-> transform(y1,x1) } }`.
*/
inline fun <R> Int.mapIndices(x: Int, transform: (Int, Int) -> R): List<List<R>> =
this.mapIndices { y1 -> x.mapIndices { x1 -> transform(y1, x1) } }
/**
* `[this].mapIndices(x) { transform }` is sugar syntax of
* `(0 until [this]).map{ y1-> (0 until [x]).map { x1-> transform(y1,x1) } }`.
*/
inline fun <R> Int.flatMapIndices(x: Int, transform: (Int, Int) -> R): List<R> =
this.indices.flatMap { y1 -> x.mapIndices { x1 -> transform(y1, x1) } }
/**
* `[this].forEachIndices { transform }` is sugar syntax of `(0 until [this]).map{ transform(it) }`.
*/
inline fun Int.forEachIndices(transform: (Int) -> Unit): Unit = this.indices.forEach(transform)
/**
* `[this].forEachIndices(x) { transform }` is sugar syntax of
* `(0 until [this]).map{ y1-> (0 until [x]).map { x1-> transform(y1,x1) } }`.
*/
inline fun Int.forEachIndices(x: Int, transform: (Int, Int) -> Unit): Unit =
this.forEachIndices { y1 -> x.forEachIndices { x1 -> transform(y1, x1) } }
/**
* get characters numeric value.
* e.g.: '0' to 0
*/
fun Char.toNumericValue(): Int = this - '0'
fun Char.caseToIndexedValue(): Int = this - 'a'
fun String.toPoweredLong(p: Int): Long {
check(this.isNotBlank())
if (this[0] == '-') return -this.drop(1).toPoweredLong(p)
var mulI = 1L
repeat(p) { mulI *= 10 }
val i = this.indexOf('.').takeIf { it != -1 } ?: return this.toLong() * mulI
var mulD = 1L
repeat(p - this.length + i + 1) { mulD *= 10 }
return this.slice(0 until i).toLong() * mulI + this.slice(i + 1..this.lastIndex).toLong() * mulD
}
/**
* make triple. e.g.:`1 to 2 to 3`
*/
infix fun <A, B, C> Pair<A, B>.to(c: C): Triple<A, B, C> = Triple(this.first, this.second, c)
fun YesNo(b: Boolean): String = if (b) Yes else No
val Yes = "Yes"
val No = "No"
fun YES_NO(b: Boolean): String = if (b) YES else NO
val YES = "YES"
val NO = "NO"
fun IntArray.swap(a: Int, b: Int): Unit = run { val temp = this[a]; this[a] = this[b]; this[b] = temp }
fun LongArray.swap(a: Int, b: Int): Unit = run { val temp = this[a]; this[a] = this[b]; this[b] = temp }
fun CharArray.swap(a: Int, b: Int): Unit = run { val temp = this[a]; this[a] = this[b]; this[b] = temp }
fun <T> Array<T>.swap(a: Int, b: Int): Unit = run { val temp = this[a]; this[a] = this[b]; this[b] = temp }
fun <T> MutableList<T>.swap(a: Int, b: Int): Unit = run { val temp = this[a]; this[a] = this[b]; this[b] = temp }
fun IntArray.changeMinOf(i: Int, v: Int): Boolean = run { if (this[i] > v) run { this[i] = v; true } else false }
fun IntArray.changeMaxOf(i: Int, v: Int): Boolean = run { if (this[i] < v) run { this[i] = v; true } else false }
fun LongArray.changeMinOf(i: Int, v: Long): Boolean = run { if (this[i] > v) run { this[i] = v; true } else false }
fun LongArray.changeMaxOf(i: Int, v: Long): Boolean = run { if (this[i] < v) run { this[i] = v; true } else false }
fun Array<IntArray>.changeMinOf(i: Int, j: Int, v: Int): Boolean = run { this[i].changeMinOf(j, v) }
fun Array<IntArray>.changeMaxOf(i: Int, j: Int, v: Int): Boolean = run { this[i].changeMaxOf(j, v) }
fun Array<LongArray>.changeMinOf(i: Int, j: Int, v: Long): Boolean = run { this[i].changeMinOf(j, v) }
fun Array<LongArray>.changeMaxOf(i: Int, j: Int, v: Long): Boolean = run { this[i].changeMaxOf(j, v) }
/**
* same usage as `IntArray.scan`, but it will faster than that.
*/
inline fun IntArray.scanArray(initial: Int, operation: (acc: Int, Int) -> Int): IntArray {
val accumulator = IntArray(this.size + 1).apply { this[0] = initial }
for (i in this.indices) accumulator[i + 1] = operation(accumulator[i], this[i])
return accumulator
}
/**
* same usage as `LongArray.scan`, but it will faster than that.
*/
inline fun LongArray.scanArray(initial: Long, operation: (acc: Long, Long) -> Long): LongArray {
val accumulator = LongArray(this.size + 1).apply { this[0] = initial }
for (i in this.indices) accumulator[i + 1] = operation(accumulator[i], this[i])
return accumulator
}
/**
* same usage as `IntArray.scanReduce`, but it will faster than that.
*/
inline fun IntArray.scanReduceArray(operation: (acc: Int, Int) -> Int): IntArray {
val accumulator = IntArray(this.size).apply { this[0] = this@scanReduceArray[0] }
for (i in 1..this.lastIndex) accumulator[i] = operation(accumulator[i - 1], this[i])
return accumulator
}
/**
* same usage as `LongArray.scanReduce`, but it will faster than that.
*/
inline fun LongArray.scanReduceArray(operation: (acc: Long, Long) -> Long): LongArray {
val accumulator = LongArray(this.size).apply { this[0] = this@scanReduceArray[0] }
for (i in 1..this.lastIndex) accumulator[i] = operation(accumulator[i - 1], this[i])
return accumulator
}
}
// endregion kokomade template dayo (^o^)