結果
| 問題 |
No.1497 Triangle
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-05-03 20:32:09 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,661 bytes |
| コンパイル時間 | 1,165 ms |
| コンパイル使用メモリ | 149,416 KB |
| 実行使用メモリ | 37,680 KB |
| 最終ジャッジ日時 | 2024-06-22 11:14:43 |
| 合計ジャッジ時間 | 7,829 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 WA * 1 |
| other | AC * 15 WA * 32 |
コンパイルメッセージ
/home/linuxbrew/.linuxbrew/opt/dmd/include/dlang/dmd/std/numeric.d(2999): Warning: cannot inline function `std.numeric.gcdImpl!ulong.gcdImpl`
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)); }
alias Pt = Tuple!(long, "x", long, "y");
void main() {
try {
for (; ; ) {
const N = readInt();
auto P = new Pt[N];
foreach (i; 0 .. N) {
P[i].x = readLong();
P[i].y = readLong();
}
Pt[] dirs;
foreach (i; 0 .. N) foreach (j; 0 .. N) {
if (i != j) {
long dx = P[j].x - P[i].x;
long dy = P[j].y - P[i].y;
const g = gcd(abs(dx), abs(dy));
dirs ~= Pt(dy / g, -dx / g);
}
}
dirs.sort!((const(Pt) p, const(Pt) q) {
const sp = (p.y > 0) ? 1 : (p.y < 0) ? 3 : (p.x > 0) ? 0 : 2;
const sq = (q.y > 0) ? 1 : (q.y < 0) ? 3 : (q.x > 0) ? 0 : 2;
return ((sp != sq) ? (sp < sq) : (p.x * q.y - p.y * q.x > 0));
});
dirs = dirs.uniq.array;
const dirsLen = cast(int)(dirs.length);
int[] masks;
masks ~= 0;
masks ~= (1 << N) - 1;
foreach (j; 0 .. dirsLen) {
/*
real t0 = atan2(cast(real)(dirs[j].y), cast(real)(dirs[j].x));
real t1 = atan2(cast(real)(dirs[(j + 1) % $].y), cast(real)(dirs[(j + 1) % $].x));
if (t0 > t1) {
t1 += 2.0L * PI;
}
const tMid = (t0 + t1) / 2.0L;
const xMid = cos(tMid);
const yMid = sin(tMid);
alias Entry = Tuple!(real, "val", int, "key");
*/
const xMid = dirs[j].x + dirs[(j + 1) % $].x;
const yMid = dirs[j].y + dirs[(j + 1) % $].y;
alias Entry = Tuple!(long, "val", int, "key");
auto es = new Entry[N];
foreach (i; 0 .. N) {
es[i] = Entry(xMid * P[i].x + yMid * P[i].y, i);
}
es.sort;
int p;
foreach (i; 0 .. N) {
p |= 1 << es[i].key;
masks ~= p;
}
debug {
writefln("(%s, %s): %s", xMid, yMid, es.map!"a.key");
}
}
masks.sort.uniq.array;
const masksLen = cast(int)(masks.length);
debug {
writeln("|masks| = ", masks.length);
}
auto fs = new long[1 << N];
foreach (p; masks) {
fs[p] = 1;
}
foreach (i; 0 .. N) foreach (p; 0 .. 1 << N) if (!(p & 1 << i)) fs[p | 1 << i] += fs[p];
foreach (p; 0 .. 1 << N) {
fs[p] = fs[p] * fs[p] * fs[p];
}
foreach (i; 0 .. N) foreach (p; 0 .. 1 << N) if (!(p & 1 << i)) fs[p | 1 << i] -= fs[p];
const ans = cast(int)(fs.count!"a > 0");
writeln(ans);
}
} catch (EOFException e) {
}
}