結果
問題 | No.2799 Cut and Eat |
ユーザー | 👑 hos.lyric |
提出日時 | 2024-06-29 04:14:27 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 3,051 bytes |
コンパイル時間 | 2,570 ms |
コンパイル使用メモリ | 157,448 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-29 04:14:31 |
合計ジャッジ時間 | 3,440 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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
5,248 KB |
testcase_01 | AC | 1 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 1 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 1 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 1 ms
5,376 KB |
testcase_16 | AC | 1 ms
5,376 KB |
testcase_17 | AC | 1 ms
5,376 KB |
testcase_18 | AC | 1 ms
5,376 KB |
testcase_19 | AC | 1 ms
5,376 KB |
testcase_20 | AC | 1 ms
5,376 KB |
testcase_21 | AC | 1 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | AC | 1 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 1 ms
5,376 KB |
testcase_26 | AC | 1 ms
5,376 KB |
testcase_27 | AC | 1 ms
5,376 KB |
testcase_28 | AC | 1 ms
5,376 KB |
testcase_29 | AC | 1 ms
5,376 KB |
testcase_30 | AC | 1 ms
5,376 KB |
testcase_31 | AC | 1 ms
5,376 KB |
testcase_32 | AC | 1 ms
5,376 KB |
testcase_33 | AC | 1 ms
5,376 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; } 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)); } long[string] cache; long brute(long K, long[] A) { A.sort; const key = A.to!string; auto ptr = key in cache; if (ptr) return *ptr; long ret; const N = cast(int)(A.length); if (N) { ret = long.min; foreach (i; 0 .. N) { if (A[i] <= K) { chmax(ret, A[i] - brute(K, A[0 .. i] ~ A[i + 1 .. N])); } else { foreach (b; 1 .. A[i]) { chmax(ret, 0 - brute(K, A[0 .. i] ~ [b, A[i] - b] ~ A[i + 1 .. $])); } } } } return cache[key] = ret; } long solve(long K, long[] A) { A.sort; const N = cast(int)(A.length); const cut = A.upperBound(K); long ans; foreach (i; 0 .. cut) { ans += (i&1?-1:+1) * A[cut - 1 - i]; } int sig = (cut&1?-1:+1); foreach (i; cut .. N) if (!(A[i] & 1)) { sig = -sig; } foreach (i; cut .. N) if (A[i] & 1) { ans += sig * (-1); sig = -sig; } return ans; } void main() { debug {{ foreach (K; 1L .. 5L + 1) { cache.clear; writeln("K = ", K); foreach (a; 1L .. 10L + 1) { writeln([a], ": ", brute(K, [a])); } foreach (m; 1 .. 10) { foreach (p; 0 .. 1 << (m-1)) { long[] bs; bs ~= 0; foreach (j; 1 .. m) if (p >> (j-1) & 1) bs ~= j; const N = cast(int)(bs.length); bs ~= m; auto A = new long[N]; foreach (i; 0 .. N) A[i] = bs[i + 1] - bs[i]; const brt = brute(K, A); const slv = solve(K, A); assert(brt == slv, format("%s %s: %s %s", K, A, brt, slv)); } } writeln; } }} try { for (; ; ) { const N = readInt; const K = readLong; auto A = new long[N]; foreach (i; 0 .. N) { A[i] = readLong; } const ans = solve(K, A); writeln((A.sum + ans) / 2); } } catch (EOFException e) { } }