結果
問題 | No.1094 木登り / Climbing tree |
ユーザー | 👑 hos.lyric |
提出日時 | 2020-06-27 23:14:55 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 475 ms / 2,000 ms |
コード長 | 3,646 bytes |
コンパイル時間 | 972 ms |
コンパイル使用メモリ | 121,856 KB |
実行使用メモリ | 54,432 KB |
最終ジャッジ日時 | 2024-06-22 07:34:00 |
合計ジャッジ時間 | 15,956 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
(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 | 448 ms
29,804 KB |
testcase_02 | AC | 207 ms
54,432 KB |
testcase_03 | AC | 115 ms
7,076 KB |
testcase_04 | AC | 143 ms
19,636 KB |
testcase_05 | AC | 238 ms
29,708 KB |
testcase_06 | AC | 235 ms
18,048 KB |
testcase_07 | AC | 460 ms
36,480 KB |
testcase_08 | AC | 465 ms
30,976 KB |
testcase_09 | AC | 463 ms
36,480 KB |
testcase_10 | AC | 461 ms
36,608 KB |
testcase_11 | AC | 471 ms
29,808 KB |
testcase_12 | AC | 475 ms
29,804 KB |
testcase_13 | AC | 471 ms
30,848 KB |
testcase_14 | AC | 461 ms
29,788 KB |
testcase_15 | AC | 226 ms
22,144 KB |
testcase_16 | AC | 347 ms
47,360 KB |
testcase_17 | AC | 280 ms
34,676 KB |
testcase_18 | AC | 256 ms
28,768 KB |
testcase_19 | AC | 314 ms
39,420 KB |
testcase_20 | AC | 475 ms
31,916 KB |
testcase_21 | AC | 284 ms
33,664 KB |
testcase_22 | AC | 470 ms
36,608 KB |
testcase_23 | AC | 451 ms
30,848 KB |
testcase_24 | AC | 449 ms
29,924 KB |
testcase_25 | AC | 449 ms
29,800 KB |
testcase_26 | AC | 457 ms
30,848 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)); } class SegmentTree(T, alias op) { import std.functional : binaryFun; alias opFun = binaryFun!op; const(T) idT; int n; T[] ts; this(int n_, const(T) idT) { this.idT = idT; for (n = 1; n < n_; n <<= 1) {} ts = new T[n << 1]; ts[] = idT; } this(inout(T)[] ts_, const(T) idT) { this.idT = idT; const n_ = cast(int)(ts_.length); for (n = 1; n < n_; n <<= 1) {} ts = new T[n << 1]; ts[0 .. n] = idT; ts[n .. n + n_] = ts_[]; ts[n + n_ .. n << 1] = idT; build(); } ref T at(int a) { return ts[n + a]; } void build() { foreach_reverse (a; 1 .. n) ts[a] = opFun(ts[a << 1], ts[a << 1 | 1]); } void set(int a, const(T) val) { ts[a += n] = val; for (; a >>= 1; ) ts[a] = opFun(ts[a << 1], ts[a << 1 | 1]); } void mulL(int a, const(T) val) { set(a, opFun(val, ts[a + n])); } void mulR(int a, const(T) val) { set(a, opFun(ts[a + n], val)); } T query(int a, int b) const { T prodL = idT, prodR = idT; for (a += n, b += n; a < b; a >>= 1, b >>= 1) { if (a & 1) prodL = opFun(prodL, ts[a++]); if (b & 1) prodR = opFun(ts[--b], prodR); } return opFun(prodL, prodR); } } enum INF = 10L^^18; int N; int[] A, B; long[] C; int[][] G; int[] poss; long[] ds; void dfs(int u, int p, long d) { poss[u] = cast(int)(ds.length); ds ~= d; foreach (i; G[u]) { const v = A[i] ^ B[i] ^ u; if (v != p) { dfs(v, u, d + C[i]); ds ~= d; } } } void main() { try { for (; ; ) { N = readInt(); A = new int[N - 1]; B = new int[N - 1]; C = new long[N - 1]; foreach (i; 0 .. N - 1) { A[i] = readInt() - 1; B[i] = readInt() - 1; C[i] = readLong(); } const Q = readInt(); auto S = new int[Q]; auto T = new int[Q]; foreach (q; 0 .. Q) { S[q] = readInt() - 1; T[q] = readInt() - 1; } G = new int[][N]; foreach (i; 0 .. N - 1) { G[A[i]] ~= i; G[B[i]] ~= i; } poss = new int[N]; ds = []; dfs(0, -1, 0); auto seg = new SegmentTree!(long, min)(ds, INF); foreach (q; 0 .. Q) { int a = poss[S[q]], b = poss[T[q]]; if (a > b) { swap(a, b); } long ans; ans += ds[a]; ans += ds[b]; ans -= 2 * seg.query(a, b + 1); writeln(ans); } } } catch (EOFException e) { } }