#592444 (Go) No.1121 Social Distancing in Cinema

• 問題: No.1121 Social Distancing in Cinema
• ユーザー: aru aru
• 提出日時: 2020-12-12 12:19:09
• 言語: Go (1.23.4)
• 結果: AC
• 実行時間: 45 ms / 2,000 ms
• コード長: 2,060 bytes
• コンパイル時間: 10,430 ms
• コンパイル使用メモリ: 235,988 KB
• 実行使用メモリ: 7,664 KB
• 最終ジャッジ日時: 2024-09-19 21:52:40
• 合計ジャッジ時間: 13,817 ms
• ジャッジサーバーID （参考情報）: judge3 / judge2

ファイルパターン	結果
sample	AC * 2
other	AC * 47

ソースコード

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package main
import (
    "bufio"
    "fmt"
    "os"
    "sort"
    "strconv"
)
var sc = bufio.NewScanner(os.Stdin)
var wr = bufio.NewWriter(os.Stdout)
func out(x ...interface{}) {
    fmt.Fprintln(wr, x...)
}
func getI() int {
    sc.Scan()
    i, e := strconv.Atoi(sc.Text())
    if e != nil {
        panic(e)
    }
    return i
}
func getF() float64 {
    sc.Scan()
    i, e := strconv.ParseFloat(sc.Text(), 64)
    if e != nil {
        panic(e)
    }
    return i
}
func getInts(N int) []int {
    ret := make([]int, N)
    for i := 0; i < N; i++ {
        ret[i] = getI()
    }
    return ret
}
func getS() string {
    sc.Scan()
    return sc.Text()
}
// min, max, asub, absなど基本関数
func max(a, b int) int {
    if a > b {
        return a
    }
    return b
}
func min(a, b int) int {
    if a < b {
        return a
    }
    return b
}
func asub(a, b int) int {
    if a > b {
        return a - b
    }
    return b - a
}
func abs(a int) int {
    if a >= 0 {
        return a
    }
    return -a
}
func lowerBound(a []int, x int) int {
    idx := sort.Search(len(a), func(i int) bool {
        return a[i] >= x
    })
    return idx
}
func upperBound(a []int, x int) int {
    idx := sort.Search(len(a), func(i int) bool {
        return a[i] > x
    })
    return idx
}
type pos struct {
    x, y, idx int
}
func calcD(a, b pos) int {
    dx := a.x - b.x
    dy := a.y - b.y
    return dx*dx + dy*dy
}
func main() {
    defer wr.Flush()
    sc.Split(bufio.ScanWords)
    sc.Buffer([]byte{}, 1000000)
    // this template is new version.
    // use getI(), getS(), getInts(), getF()
    N := getI()
    x := make([]int, N)
    y := make([]int, N)
    for i := 0; i < N; i++ {
        x[i], y[i] = getI(), getI()
    }
    K := (N + 89) / 90
    // for a := 0; a <= 8; a++ {
    //  for b := 0; b <= 9; b++ {
    for a := 0; a <= 10; a++ {
        for b := 0; b <= 10; b++ {
            ans := make([]int, 0)
            for i := 0; i < N; i++ {
                if x[i]%18 == a%18 && y[i]%10 == b%10 {
                    ans = append(ans, i)
                    continue
                }
                if x[i]%18 == (a+9)%18 && y[i]%10 == (b+5)%10 {
                    ans = append(ans, i)
                    continue
                }
            }
            if len(ans) >= K {
                out(len(ans))
                for _, e := range ans {
                    fmt.Fprint(wr, e+1, " ")
                }
                out()
                return
            }
        }
    }
}
 
 
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