結果
| 問題 |
No.8011 品物の並び替え (Extra)
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-04-01 13:58:52 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 335 ms / 5,000 ms |
| コード長 | 3,334 bytes |
| コンパイル時間 | 10,091 ms |
| コンパイル使用メモリ | 323,064 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-13 04:38:28 |
| 合計ジャッジ時間 | 13,138 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 9 |
ソースコード
import std.conv, std.functional, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.container, std.math, std.numeric, std.range, 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 XRand {
uint x = 314159265, y = 358979323, z = 846264338, w = 327950288;
void setSeed(uint seed) { w ^= seed * 65535; }
uint next() { uint t = x ^ x << 11; x = y; y = z; z = w; return w = w ^ w >> 19 ^ t ^ t >> 8; }
uint nextInt(uint m) { return next() % m; }
int nextInt(int a, int b) { return a + nextInt(b - a + 1); }
ulong nextLong(ulong m) { return (next() | cast(ulong)(next()) << 32) % m; }
long nextLong(long a, long b) { return a + nextLong(b - a + 1); }
real nextReal() { return next() / 4294967296.0; }
}
enum NUM_ITERS = 10^^5;
enum TEMP_INIT = 1e100;
enum TEMP_RATE = 0.995;
int N, M;
int[] A, B, C;
void main() {
auto rng = new XRand();
try {
for (; ; ) {
N = readInt();
M = readInt();
A = new int[M];
B = new int[M];
C = new int[M];
foreach (i; 0 .. M) {
A[i] = readInt();
B[i] = readInt();
C[i] = readInt();
}
auto D = new int[][](N, N);
foreach (i; 0 .. M) {
D[A[i]][B[i]] += C[i];
}
auto us = iota(N).array;
auto pos = iota(N).array;
int score;
foreach (i; 0 .. M) {
if (A[i] < B[i]) {
score += C[i];
}
}
real temp = TEMP_INIT;
foreach (iter; 0 .. NUM_ITERS) {
int a, b;
for (; ; ) {
a = rng.nextInt(N);
b = rng.nextInt(N);
if (a != b) {
if (pos[a] > pos[b]) {
swap(a, b);
}
break;
}
}
int scoreDiff;
scoreDiff -= D[a][b];
scoreDiff += D[b][a];
foreach (u; us[pos[a] + 1 .. pos[b]]) {
scoreDiff -= D[a][u];
scoreDiff -= D[u][b];
scoreDiff += D[b][u];
scoreDiff += D[u][a];
}
if (scoreDiff > 0 || rng.nextReal() < exp(scoreDiff / temp)) {
score += scoreDiff;
stderr.writefln("iter = %s, score = %s", iter, score);
swap(us[pos[a]], us[pos[b]]);
swap(pos[a], pos[b]);
}
temp *= TEMP_RATE;
}
writeln(score);
writeln(us.to!string.replaceAll(regex(`[\[\],]`), ""));
}
} catch (EOFException e) {
}
}