#500730 (Go) No.1037 exhausted

• 問題: No.1037 exhausted
• ユーザー: c-yan
• 提出日時: 2020-06-21 10:48:07
• 言語: Go (1.22.1)
• 結果: AC
• 実行時間: 657 ms / 2,000 ms
• コード長: 1,631 bytes
• コンパイル時間: 15,424 ms
• コンパイル使用メモリ: 239,300 KB
• 実行使用メモリ: 5,980 KB
• 最終ジャッジ日時: 2024-07-03 17:52:33
• 合計ジャッジ時間: 20,170 ms
• ジャッジサーバーID （参考情報）: judge5 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 5,248 KB
testcase_01	AC	1 ms; 5,376 KB
testcase_02	AC	1 ms; 5,376 KB
testcase_03	AC	2 ms; 5,376 KB
testcase_04	AC	1 ms; 5,376 KB
testcase_05	AC	1 ms; 5,376 KB
testcase_06	AC	1 ms; 5,376 KB
testcase_07	AC	1 ms; 5,376 KB
testcase_08	AC	1 ms; 5,376 KB
testcase_09	AC	2 ms; 5,376 KB
testcase_10	AC	1 ms; 5,376 KB
testcase_11	AC	1 ms; 5,376 KB
testcase_12	AC	528 ms; 5,788 KB
testcase_13	AC	494 ms; 5,796 KB
testcase_14	AC	581 ms; 5,808 KB
testcase_15	AC	528 ms; 5,760 KB
testcase_16	AC	640 ms; 5,756 KB
testcase_17	AC	604 ms; 5,968 KB
testcase_18	AC	645 ms; 5,980 KB
testcase_19	AC	657 ms; 5,980 KB
testcase_20	AC	1 ms; 5,376 KB
testcase_21	AC	1 ms; 5,376 KB
testcase_22	AC	1 ms; 5,376 KB

ソースコード

package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
)

func min(x, y int) int {
	if x < y {
		return x
	}
	return y
}

func main() {
	defer flush()

	N := readInt()
	V := readInt()
	L := readInt()

	cx := 0
	d := map[int]int{}
	d[V] = 0
	for i := 0; i < N; i++ {
		x := readInt()
		v := readInt()
		w := readInt()
		nd := map[int]int{}

		for k := range d {
			t := k - (x - cx)
			if t < 0 {
				continue
			}
			_, ok := nd[t]
			if !ok || nd[t] > d[k] {
				nd[t] = d[k]
			}
			t = min(t+v, V)
			_, ok = nd[t]
			if !ok || nd[t] > d[k]+w {
				nd[t] = d[k] + w
			}
		}

		if len(nd) == 0 {
			println(-1)
			return
		}
		d = nd
		cx = x
	}

	result := math.MaxInt64
	for k := range d {
		if k-(L-cx) >= 0 {
			result = min(result, d[k])
		}
	}
	println(result)
}

const (
	ioBufferSize = 1 * 1024 * 1024 // 1 MB
)

var stdinScanner = func() *bufio.Scanner {
	result := bufio.NewScanner(os.Stdin)
	result.Buffer(make([]byte, ioBufferSize), ioBufferSize)
	result.Split(bufio.ScanWords)
	return result
}()

func readString() string {
	stdinScanner.Scan()
	return stdinScanner.Text()
}

func readInt() int {
	result, err := strconv.Atoi(readString())
	if err != nil {
		panic(err)
	}
	return result
}

func readInts(n int) []int {
	result := make([]int, n)
	for i := 0; i < n; i++ {
		result[i] = readInt()
	}
	return result
}

var stdoutWriter = bufio.NewWriter(os.Stdout)

func flush() {
	stdoutWriter.Flush()
}

func printf(f string, args ...interface{}) (int, error) {
	return fmt.Fprintf(stdoutWriter, f, args...)
}

func println(args ...interface{}) (int, error) {
	return fmt.Fprintln(stdoutWriter, args...)
}