結果
問題 | No.1054 Union add query |
ユーザー | 👑 hos.lyric |
提出日時 | 2020-05-15 21:41:44 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 579 ms / 2,000 ms |
コード長 | 3,478 bytes |
コンパイル時間 | 847 ms |
コンパイル使用メモリ | 122,376 KB |
実行使用メモリ | 57,964 KB |
最終ジャッジ日時 | 2024-06-22 07:00:17 |
合計ジャッジ時間 | 5,985 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 | 1 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 463 ms
24,372 KB |
testcase_04 | AC | 579 ms
57,964 KB |
testcase_05 | AC | 433 ms
16,936 KB |
testcase_06 | AC | 485 ms
56,876 KB |
testcase_07 | AC | 461 ms
55,840 KB |
testcase_08 | AC | 477 ms
55,264 KB |
testcase_09 | AC | 524 ms
43,848 KB |
testcase_10 | AC | 312 ms
44,228 KB |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } real readReal() { return readToken.to!real; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } void bAdd(T)(T[] bit, int pos, T val) in { assert(0 <= pos && pos < bit.length, "bAdd: 0 <= pos < |bit| must hold"); } do { for (int x = pos; x < bit.length; x |= x + 1) { bit[x] += val; } } // sum of [0, pos) T bSum(T)(T[] bit, int pos) in { assert(0 <= pos && pos <= bit.length, "bSum: 0 <= pos <= |bit| must hold"); } do { T ret = 0; for (int x = pos - 1; x >= 0; x = (x & (x + 1)) - 1) { ret += bit[x]; } return ret; } int root(int[] uf, int u) { return (uf[u] < 0) ? u : (uf[u] = uf.root(uf[u])); } bool connect(int[] uf, int u, int v) { u = uf.root(u); v = uf.root(v); if (u == v) return false; if (uf[u] > uf[v]) swap(u, v); uf[u] += uf[v]; uf[v] = u; return true; } int V; int[][] graph; int zeit; int[] dis, fin; void dfs(int u) { dis[u] = zeit++; foreach (v; graph[u]) { dfs(v); } fin[u] = zeit++; } void main() { try { for (; ; ) { const N = readInt(); const Q = readInt(); auto T = new int[Q]; auto A = new int[Q]; auto B = new int[Q]; foreach (q; 0 .. Q) { T[q] = readInt(); A[q] = readInt(); B[q] = readInt(); --A[q]; if (T[q] == 1) { --B[q]; } } auto as = new int[Q]; as[] = -1; auto uf = new int[N]; uf[] = -1; auto us = iota(N).array; V = N; graph = new int[][2 * N - 1]; foreach (q; 0 .. Q) { if (T[q] == 1) { const ra = uf.root(A[q]); const rb = uf.root(B[q]); if (ra != rb) { uf.connect(ra, rb); const u = V++; graph[u] ~= us[ra]; graph[u] ~= us[rb]; us[uf.root(ra)] = u; } } else { as[q] = us[uf.root(A[q])]; } } zeit = 0; dis = new int[V]; fin = new int[V]; dis[] = -1; foreach_reverse (u; 0 .. V) { if (dis[u] == -1) { dfs(u); } } auto bit = new long[zeit + 1]; foreach (q; 0 .. Q) { if (T[q] == 2) { bit.bAdd(dis[as[q]], +B[q]); bit.bAdd(fin[as[q]], -B[q]); } else if (T[q] == 3) { const ans = bit.bSum(fin[A[q]]); writeln(ans); } } } } catch (EOFException e) { } }