結果
問題 | No.1095 Smallest Kadomatsu Subsequence |
ユーザー | aru aru |
提出日時 | 2020-09-21 15:22:34 |
言語 | Go (1.22.1) |
結果 |
AC
|
実行時間 | 609 ms / 2,000 ms |
コード長 | 4,833 bytes |
コンパイル時間 | 13,382 ms |
コンパイル使用メモリ | 237,820 KB |
実行使用メモリ | 22,628 KB |
最終ジャッジ日時 | 2024-06-24 11:33:56 |
合計ジャッジ時間 | 17,256 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 1 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,812 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 1 ms
6,940 KB |
testcase_04 | AC | 1 ms
6,944 KB |
testcase_05 | AC | 1 ms
6,940 KB |
testcase_06 | AC | 1 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 1 ms
6,944 KB |
testcase_10 | AC | 1 ms
6,940 KB |
testcase_11 | AC | 1 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 13 ms
6,940 KB |
testcase_14 | AC | 12 ms
6,940 KB |
testcase_15 | AC | 13 ms
6,940 KB |
testcase_16 | AC | 12 ms
6,940 KB |
testcase_17 | AC | 12 ms
6,940 KB |
testcase_18 | AC | 12 ms
6,940 KB |
testcase_19 | AC | 13 ms
6,940 KB |
testcase_20 | AC | 13 ms
6,944 KB |
testcase_21 | AC | 12 ms
6,944 KB |
testcase_22 | AC | 12 ms
6,940 KB |
testcase_23 | AC | 603 ms
22,628 KB |
testcase_24 | AC | 609 ms
20,560 KB |
testcase_25 | AC | 589 ms
20,524 KB |
testcase_26 | AC | 591 ms
20,552 KB |
testcase_27 | AC | 591 ms
20,524 KB |
testcase_28 | AC | 175 ms
22,604 KB |
testcase_29 | AC | 174 ms
22,628 KB |
testcase_30 | AC | 338 ms
20,496 KB |
testcase_31 | AC | 323 ms
20,496 KB |
testcase_32 | AC | 336 ms
20,508 KB |
ソースコード
package main import ( "bufio" "fmt" "math" "os" "sort" "strconv" "strings" ) func out(x ...interface{}) { fmt.Println(x...) } var sc = bufio.NewScanner(os.Stdin) func getInt() int { sc.Scan() i, e := strconv.Atoi(sc.Text()) if e != nil { panic(e) } return i } func getInts(N int) []int { ret := make([]int, N) for i := 0; i < N; i++ { ret[i] = getInt() } return ret } func getString() 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 } // 平衡二分探索木 var ( y uint = 88172645463325252 ) const inf = math.MaxInt64 func xorshift() uint { y ^= y << 7 y ^= y >> 9 return y } type treapNode struct { value int priority uint count int left *treapNode right *treapNode } func newTreapNode(v int) *treapNode { return &treapNode{v, xorshift(), 1, nil, nil} } func treapRotateRight(n *treapNode) *treapNode { l := n.left n.left = l.right l.right = n return l } func treapRotateLeft(n *treapNode) *treapNode { r := n.right n.right = r.left r.left = n return r } func treapInsert(n *treapNode, v int) *treapNode { if n == nil { return newTreapNode(v) } if n.value == v { n.count++ return n } if n.value > v { n.left = treapInsert(n.left, v) if n.priority > n.left.priority { n = treapRotateRight(n) } } else { n.right = treapInsert(n.right, v) if n.priority > n.right.priority { n = treapRotateLeft(n) } } return n } func treapDelete(n *treapNode, v int) *treapNode { if n == nil { panic("node is not found!") } if n.value > v { n.left = treapDelete(n.left, v) return n } if n.value < v { n.right = treapDelete(n.right, v) return n } // n.value == v if n.count > 1 { n.count-- return n } if n.left == nil && n.right == nil { return nil } if n.left == nil { n = treapRotateLeft(n) } else if n.right == nil { n = treapRotateRight(n) } else { // n.left != nil && n.right != nil if n.left.priority < n.right.priority { n = treapRotateRight(n) } else { n = treapRotateLeft(n) } } return treapDelete(n, v) } func treapCount(n *treapNode) int { if n == nil { return 0 } return n.count + treapCount(n.left) + treapCount(n.right) } func treapString(n *treapNode) string { if n == nil { return "" } result := make([]string, 0) if n.left != nil { result = append(result, treapString(n.left)) } result = append(result, fmt.Sprintf("%d:%d", n.value, n.count)) if n.right != nil { result = append(result, treapString(n.right)) } return strings.Join(result, " ") } func treapMin(n *treapNode) int { if n.left != nil { return treapMin(n.left) } return n.value } func treapLEMax(n *treapNode, v int) int { ret := -inf t := n for t != nil { if t.value <= v { ret = max(ret, t.value) } if t.value > v { t = t.left } else { t = t.right } } return ret } func treapGEMin(n *treapNode, v int) int { ret := inf t := n for t != nil { if t.value >= v { ret = min(ret, t.value) } if t.value < v { t = t.right } else { t = t.left } } return ret } func treapMax(n *treapNode) int { if n.right != nil { return treapMax(n.right) } return n.value } type treap struct { root *treapNode size int } func (t *treap) Insert(v int) { t.root = treapInsert(t.root, v) t.size++ } func (t *treap) Delete(v int) { t.root = treapDelete(t.root, v) t.size-- } func (t *treap) String() string { return treapString(t.root) } func (t *treap) Count() int { return t.size } func (t *treap) Min() int { return treapMin(t.root) } func (t *treap) LEMax(v int) int { return treapLEMax(t.root, v) } func (t *treap) Max() int { return treapMax(t.root) } func (t *treap) GEMin(v int) int { return treapGEMin(t.root, v) } func main() { sc.Split(bufio.ScanWords) sc.Buffer([]byte{}, 1000000) N := getInt() A := getInts(N) lt := &treap{} rt := &treap{} lt.Insert(A[0]) for i := 2; i < N; i++ { rt.Insert(A[i]) } result := inf for i := 1; i < N-1; i++ { a := lt.Min() b := rt.Min() if a < A[i] && b < A[i] { result = min(result, a+b+A[i]) } c := lt.GEMin(A[i]) d := rt.GEMin(A[i]) if c != inf && d != inf && c > A[i] && d > A[i] { result = min(result, c+d+A[i]) } lt.Insert(A[i]) rt.Delete(A[i+1]) } if result == inf { out(-1) return } out(result) }