結果
問題 | No.650 行列木クエリ |
ユーザー | nebukuro09 |
提出日時 | 2018-03-02 14:03:43 |
言語 | D (dmd 2.106.1) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,065 bytes |
コンパイル時間 | 1,019 ms |
コンパイル使用メモリ | 151,540 KB |
実行使用メモリ | 600,596 KB |
最終ジャッジ日時 | 2024-06-12 23:58:37 |
合計ジャッジ時間 | 4,695 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | WA | - |
testcase_01 | MLE | - |
testcase_02 | -- | - |
testcase_03 | -- | - |
testcase_04 | -- | - |
testcase_05 | -- | - |
testcase_06 | -- | - |
testcase_07 | -- | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
ソースコード
import std.stdio, std.array, std.string, std.conv, std.algorithm; import std.typecons, std.range, std.random, std.math, std.container; import std.numeric, std.bigint, core.bitop, std.bitmanip, std.datetime; alias Mat = Tuple!(long, "a", long, "b", long, "c", long, "d"); immutable long MOD = 10^^9 + 7; immutable Mat E = Mat(1L, 0L, 0L, 1L); Mat mul(Mat X, Mat Y) { auto ret = Mat(X.a * Y.a + X.b * Y.c, X.a * Y.b + X.b * Y.d, X.c * Y.a + X.d * Y.c, X.c * Y.b + X.d * Y.d); return Mat(ret.a % MOD, ret.b % MOD, ret.c % MOD, ret.d % MOD); } class HLDecomposition { alias Node = Tuple!(int, "group", int, "number"); int N; int[][] G; int[][] groups; int[] group_parent; Node[] nodes; this (int N) { this.N = N; G = new int[][](N); nodes = new Node[](N); } void add_edge(int u, int v) { G[u] ~= v; } void run(int root) { auto subtree_size = dfs_subtree_size(root); int group_count = -1; void decompose(int n, int p, bool heavy) { if (!heavy) { group_count += 1; groups.length += 1; group_parent ~= p; } nodes[n] = Node(group_count, groups[group_count].length.to!int); groups[group_count] ~= n; bool first = true; G[n].sort!((a, b) => subtree_size[a] > subtree_size[b]); foreach (m; G[n]) { if (m == p) continue; decompose(m, n, first); first = false; } } decompose(root, -1, false); group_count += 1; } int[] dfs_subtree_size(int root) { auto subtree_size = new int[](N); int dfs(int n, int p) { subtree_size[n] = 1; foreach (m; G[n]) if (m != p) subtree_size[n] += dfs(m, n); return subtree_size[n]; } dfs(root, -1); return subtree_size; } } class SegmentTree { Mat[] table; int size; this(int n) { assert(bsr(n) < 29); size = 1 << (bsr(n) + 2); table = new Mat[](size); table.fill(E); } void assign(int pos, Mat X) { return assign(pos, X, 0, 0, size/2-1); } void assign(int pos, Mat X, int i, int left, int right) { if (left == right) { table[i] = X; return; } auto mid = (left + right) / 2; if (pos <= mid) assign(pos, X, i*2+1, left, mid); else assign(pos, X, i*2+2, mid+1, right); table[i] = mul(table[i*2+1], table[i*2+2]); } Mat sum(int pl, int pr) { return sum(pl, pr, 0, 0, size/2-1); } Mat sum(int pl, int pr, int i, int left, int right) { if (pl > right || pr < left) return E; else if (pl <= left && right <= pr) return table[i]; return mul(sum(pl, pr, i*2+1, left, (left+right)/2), sum(pl, pr, i*2+2, (left+right)/2+1, right)); } } void main() { auto N = readln.chomp.to!int; auto G = new HLDecomposition(N); auto edges = new Tuple!(int, int)[](N-1); foreach (i; 0..N-1) { auto s = readln.split.map!(to!int); G.add_edge(s[0], s[1]); G.add_edge(s[1], s[0]); edges[i] = tuple(s[0], s[1]); } G.run(0); SegmentTree[] st; foreach (g; G.groups) { st ~= new SegmentTree(g.length.to!int); } auto Q = readln.chomp.to!int; while (Q--) { auto q = readln.split; if (q[0] == "x") { int v = edges[q[1].to!int][1]; int g = G.nodes[v].group; int n = G.nodes[v].number; st[g].assign(n, Mat(q[2].to!long, q[3].to!long, q[4].to!long, q[5].to!long)); } else { int u = q[1].to!int; int v = q[2].to!int; int ug = G.nodes[u].group; int un = G.nodes[u].number; int vg = G.nodes[v].group; int vn = G.nodes[v].number; Mat[] ret; int g = vg; int last = vn; while (true) { if (g == ug && g == vg) { ret ~= st[g].sum(un+1, vn); break; } else if (g == ug) { if (G.groups[g].back != u) { ret ~= st[g].sum(un+1, last); } break; } else if (g == vg) { ret ~= st[g].sum(0, vn); } else { ret ~= st[g].sum(0, last); g = G.group_parent[g]; } int p = G.group_parent[g]; g = G.nodes[p].group; last = G.nodes[p].number; } ret.reverse(); auto ans = Mat(1L, 0L, 0L, 1L); foreach (r; ret) ans = mul(ans, r); writeln(ans.a, " ", ans.b, " ", ans.c, " ", ans.d); } } }