結果
| 問題 |
No.3237 Find the Treasure!
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-08-15 21:29:38 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 2,543 bytes |
| コンパイル時間 | 2,474 ms |
| コンパイル使用メモリ | 107,420 KB |
| 実行使用メモリ | 26,228 KB |
| 平均クエリ数 | 13.48 |
| 最終ジャッジ日時 | 2025-08-15 21:30:15 |
| 合計ジャッジ時間 | 11,748 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 9 WA * 13 |
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; }
string COLOR(string s = "") { return "\x1b[" ~ s ~ "m"; }
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 ask(int[] xs) {
write("?");
foreach (i; 0 .. N - 1) write(" ", xs[i]);
writeln;
stdout.flush;
const res = readToken;
if (res == "Invalid") {
import core.stdc.stdlib;
exit(0);
}
return (res == "Yes");
}
int[][] graph;
int[] dep;
void dfs(int u, int p) {
foreach (v; graph[u]) if (p != v) {
dep[v] = dep[u] + 1;
dfs(v, u);
}
}
void main() {
N = readInt;
A = new int[N - 1];
B = new int[N - 1];
foreach (i; 0 .. N - 1) {
A[i] = readInt;
B[i] = readInt;
}
graph = new int[][N + 1];
foreach (i; 0 .. N - 1) {
graph[A[i]] ~= B[i];
graph[B[i]] ~= A[i];
}
dep = new int[N + 1];
dfs(1, -1);
auto us = iota(1, N + 1).array;
auto sides = new int[N + 1];
sides[] = -1;
foreach (u; 1 .. N + 1) sides[u] = dep[u] & 1;
for (; ; ) {
debug {
writefln("us = %s, sides = %s", us, sides);
}
// avoid 1
auto xs = new int[N - 1];
foreach (i; 0 .. N - 1) xs[i] = (sides[A[i]] == 1) ? B[i] : A[i];
const res = ask(xs);
int[] vs;
if (res) {
foreach (u; us) if (sides[u] == 0) vs ~= u;
} else {
foreach (u; us) if (sides[u] == 1) vs ~= u;
}
us = vs;
if (us.length == 1) break;
sides[] = -1;
foreach (i, u; us) sides[u] = (2 * i >= us.length) ? 1 : 0;
}
writeln("! ", us[0]);
stdout.flush;
}