結果
| 問題 |
No.2346 Replace!!
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-06-11 04:33:57 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 83 ms / 2,000 ms |
| コード長 | 3,326 bytes |
| コンパイル時間 | 939 ms |
| コンパイル使用メモリ | 122,408 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-22 18:06:16 |
| 合計ジャッジ時間 | 5,168 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 73 |
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)); }
int N;
int[] A, B;
bool solve() {
foreach (u; 0 .. N) {
auto vis = new bool[N];
bool ok;
for (int v = u; ; ) {
v = A[v];
if (vis[v]) break;
vis[v] = true;
ok = ok || (B[u] == v);
}
if (!ok) {
debug {
writeln("impossible B[u] for u = ", u);
}
return false;
}
}
{
auto ids = new int[N];
ids[] = -1;
auto vis = new int[N];
vis[] = -1;
foreach (u; 0 .. N) {
int v;
for (v = u; !~vis[v]; v = A[v]) {
vis[v] = u;
}
if (vis[v] == u) {
int[] cyc;
for (int w = v; ; ) {
cyc ~= w;
if ((w = A[w]) == v) break;
}
const cycLen = cast(int)(cyc.length);
debug {
writeln("cyc = ", cyc);
}
foreach (j; 0 .. cycLen) {
ids[cyc[j]] = j;
}
auto visB = new int[cycLen];
visB[] = -1;
int cnt;
foreach (j; 0 .. cycLen) {
int k;
for (k = j; !~visB[k]; k = ids[B[cyc[k]]]) {
visB[k] = j;
}
if (visB[k] == j) {
if (++cnt >= 2) {
return false;
}
int[] cycB;
for (int l = k; ; ) {
cycB ~= l;
if ((l = ids[B[cyc[l]]]) == k) break;
}
const cycBLen = cast(int)(cycB.length);
const h0 = cycB.minIndex;
cycB = cycB[h0 .. $] ~ cycB[0 .. h0];
debug {
writeln(" cycB = ", cycB);
}
foreach (h; 0 .. cycBLen - 1) {
if (!(cycB[h] < cycB[h + 1])) {
return false;
}
}
}
}
}
}
}
return true;
}
void main() {
try {
for (; ; ) {
const numCases = readInt;
foreach (caseId; 0 .. numCases) {
N = readInt;
A = new int[N];
B = new int[N];
foreach (u; 0 .. N) A[u] = readInt - 1;
foreach (u; 0 .. N) B[u] = readInt - 1;
const ans = solve;
writeln(ans ? "Yes" : "No");
}
}
} catch (EOFException e) {
}
}