結果
問題 | No.1440 The Quiz Competition |
ユーザー | 👑 hos.lyric |
提出日時 | 2021-03-26 22:39:09 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 74 ms / 2,000 ms |
コード長 | 3,784 bytes |
コンパイル時間 | 1,330 ms |
コンパイル使用メモリ | 128,972 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-06-22 11:06:37 |
合計ジャッジ時間 | 3,264 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | AC | 1 ms
6,812 KB |
testcase_01 | AC | 4 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 1 ms
6,940 KB |
testcase_04 | AC | 39 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 4 ms
6,944 KB |
testcase_07 | AC | 1 ms
6,940 KB |
testcase_08 | AC | 46 ms
6,944 KB |
testcase_09 | AC | 47 ms
6,940 KB |
testcase_10 | AC | 49 ms
6,944 KB |
testcase_11 | AC | 50 ms
6,940 KB |
testcase_12 | AC | 48 ms
6,940 KB |
testcase_13 | AC | 50 ms
6,944 KB |
testcase_14 | AC | 52 ms
6,944 KB |
testcase_15 | AC | 53 ms
6,944 KB |
testcase_16 | AC | 54 ms
6,940 KB |
testcase_17 | AC | 55 ms
6,940 KB |
testcase_18 | AC | 35 ms
6,948 KB |
testcase_19 | AC | 38 ms
6,944 KB |
testcase_20 | AC | 39 ms
6,940 KB |
testcase_21 | AC | 34 ms
6,940 KB |
testcase_22 | AC | 73 ms
6,940 KB |
testcase_23 | AC | 73 ms
6,944 KB |
testcase_24 | AC | 73 ms
6,940 KB |
testcase_25 | AC | 71 ms
6,944 KB |
testcase_26 | AC | 74 ms
6,944 KB |
testcase_27 | AC | 74 ms
6,944 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)); } long brute(const(long) N, const(long) A, const(long) W, const(long) K) { long ret = long.min; void dfs(long i, long a, long w, long aLast, long[] scores) { if (i == N) { if (a == 0 && w == 0) { auto ss = scores.dup; ss.sort.reverse; if (K == 1 || ss[K - 2] > ss[K - 1]) { chmax(ret, ss[K - 1]); } } } else { foreach (aa; 0 .. min(a, aLast) + 1) { foreach (ww; 0 .. w + 1) { dfs(i + 1, a - aa, w - ww, aa, scores ~ (aa - ww * (ww + 1) / 2)); } } } } dfs(0, A, W, A, []); return ret; } long solve(const(long) N, const(long) A, const(long) W, const(long) K) { enum LIM = 10L^^18; long ret = long.min; if (K == 1) { ret = A; } else if (K == N) { foreach (w; 0 .. 10) { if (W >= w) { const q = (W - w) / N, r = (W - w) % N; const me = q + ((0 < r) ? 1 : 0) + w; long lo = -(me * (me + 1) / 2) - 1, hi = LIM; for (; lo + 1 < hi; ) { const mid = (lo + hi) / 2; BigInt need; need += mid + (me * (me + 1) / 2); need += BigInt(max(r - 1, 0)) * max(mid + 1 + ((q + 1) * (q + 2) / 2), 0); need += BigInt(N - 1 - max(r - 1, 0)) * max(mid + 1 + (q * (q + 1) / 2), 0); ((need <= A) ? lo : hi) = mid; } debug { // writefln("HELP %s %s %s %s: w = %s, q = %s, r = %s, me = %s, lo = %s", N, A, W, K, w, q, r, me, lo); } if (lo >= -(me * (me + 1) / 2)) { chmax(ret, lo); } } } } else { if (A >= K - 1) { ret = (A - (K - 1)) / K; } else if (W >= N - K + 1) { ret = -1; } else { // } } return ret; } void main() { debug { enum lim = 8; foreach (n; 2 .. lim) { stderr.writefln("testing n = %s", n); stderr.flush; foreach (a; 0 .. lim) foreach (w; 0 .. lim) foreach (k; 1 .. n + 1) { const brt = brute(n, a, w, k); const slv = solve(n, a, w, k); if (brt != slv) { stderr.writefln("n = %s, a = %s, w = %s, k = %s: %s %s", n, a, w, k, brt, slv); stderr.flush; return; } } } } try { for (; ; ) { const numCases = readInt(); foreach (caseId; 0 .. numCases) { const N = readLong(); const A = readLong(); const W = readLong(); const K = readLong(); const ans = solve(N, A, W, K); if (ans <= long.min) { writeln(":("); } else { writeln(ans); } } } } catch (EOFException e) { } }